RECOMMENDED FOR FULL-TEXT PUBLICATION
                               Pursuant to Sixth Circuit Rule 206
                                       File Name: 09a0271p.06

                  UNITED STATES COURT OF APPEALS
                                   FOR THE SIXTH CIRCUIT
                                     _________________


                                              X
                                               -
 SHERMAN L. GREENE,
                                               -
                                            Petitioner,
                                               -
                                               -
                                                   No. 08-4094
          v.
                                               ,
                                                >
                                               -
                                               -
 KING JAMES COAL MINING, INC.; KENTUCKY
                                               -
 COAL PRODUCERS SELF-INSURANCE FUND;
                                               -
 DIRECTOR, OFFICE OF WORKERS’
 COMPENSATION PROGRAMS, UNITED STATES; -
                                               -
                              Respondents. -
 and DEPARTMENT OF LABOR,
                                               -
                                              N
                      On Petition for Review of an Order
                        of the Benefits Review Board.
                              No. 07-0898 BLA.
                                      Argued: June 12, 2009
                                Decided and Filed: July 30, 2009
                                                                                             *
             Before: SUTTON and GRIFFIN, Circuit Judges; LIOI, District Judge.

                                       _________________

                                             COUNSEL
ARGUED: John L. Grigsby, APPALACHIAN RESEARCH & DEFENSE FUND OF
KENTUCKY, INC., Barbourville, Kentucky, for Petitioner. Rita Ann Roppolo,
UNITED STATES DEPARTMENT OF LABOR, Washington, D.C., Ronald Eugene
Gilbertson, K & L GATES LLP, Washington, D.C., for Respondents. ON BRIEF:
John L. Grigsby, APPALACHIAN RESEARCH & DEFENSE FUND OF KENTUCKY,
INC., Barbourville, Kentucky, for Petitioner. Rita Ann Roppolo, Patricia M. Nece,
UNITED STATES DEPARTMENT OF LABOR, Washington, D.C., Ronald Eugene
Gilbertson, K & L GATES LLP, Washington, D.C., for Respondents.




         *
         The Honorable Sara Lioi, United States District Judge for the Northern District of Ohio, sitting
by designation.


                                                   1
No. 08-4094        Greene v. King James Coal Mining, Inc., et al.                 Page 2


                                 _________________

                                      OPINION
                                 _________________

       LIOI, District Judge. Sherman L. Greene petitions for review of an order of the
Benefits Review Board (“Board”) affirming the Administrative Law Judge’s denial of
his claim under the Black Lung Benefits Act (the “Act”), 30 U.S.C. § 901, et seq.
Greene challenges the Board’s determination that substantial evidence supported the
ALJ’s finding that Greene failed to establish the existence of pneumoconiosis.

                                           I.

       Greene was born in 1942. He worked as a coal miner off and on between 1960
and 1963 and again between 1970 and 1985. His last employer was the respondent,
King James Coal Company, for whom he worked a total of one and a half to two years,
ending in 1985. The ALJ found that Greene had established a total of eleven years of
coal mine employment. The ALJ also found that Greene had a long history of cigarette
smoking, attributing to him a total of forty-five (45) pack-years. Green does not
challenge either of these factual findings on appeal.

       Greene filed his first claim for benefits on July 28, 1997. That claim was denied
after Greene failed to establish any of the medical elements of entitlement. He filed the
instant claim on July 29, 2002. Four physicians submitted medical opinions in
connection with his claim: (1) Dr. Tammy Brown; (2) Dr. Glen Baker; (3) Dr. Byron
Westerfield; and (4) Dr. Bruce Broudy.

       Dr. Brown was Greene’s treating physician. She diagnosed Greene with black
lung disease based upon symptoms of shortness of breath, cough, wheezing, and
recurrent bouts of acute bronchitis. In her report, Dr. Brown stated that Greene’s chest
x-rays and pulmonary function tests were diagnostic of emphysema which, based upon
his history, was related to silicosis. Dr. Brown diagnosed Greene with chronic
pulmonary disease related to what she believed was his eighteen (18) years of
employment in the coal mines. This diagnosis was based upon a chest x-ray that
No. 08-4094            Greene v. King James Coal Mining, Inc., et al.                             Page 3


revealed emphysematous lungs, as well as Greene’s supposed 18-year history of
exposure to coal dust.

         Dr. Baker, the Department of Labor (“DOL”) examining physician chosen by
Greene, examined Greene on October 30, 2002. He noted that Greene had been smoking
a half-pack of cigarettes per day for twenty-five (25) years (i.e., 12.5 pack-years), and
accepted Greene’s representation of sixteen (16) years of coal mine employment. Dr.
Baker diagnosed Greene with coal workers’ pneumoconiosis based upon an abnormal
chest x-ray1 and coal dust exposure.               In addition, Dr. Baker diagnosed COPD,
hypoxemia, chronic bronchitis, and chest pain. Dr. Baker attributed the pneumoconiosis
solely to coal mine dust exposure, but explained that the COPD, hypoxemia, and chronic
bronchitis were produced by a combination of coal mine dust exposure and cigarette
smoking. Responding to the ALJ’s request for clarification, Dr. Baker provided a
supplemental report, dated August 17, 2004, in which he confirmed his prior findings
on the bases stated in his initial report, as well as the presence of x-ray changes
consistent with pneumoconiosis and a history of occupational exposure of at least ten
(10) years which, according to Dr. Baker, was “usually felt to be presumptive evidence
in the absence of other causes that the changes are due to coal mine employment and
coal dust exposure.” The supplemental report also noted the COPD, chronic bronchitis,
and arterial hypoxemia diagnoses, which Dr. Baker felt could “be contributed to, to some
extent, by [Greene’s] coal dust exposure.” Although the supplement was intended to
clarify Dr. Baker’s earlier report, it included the following equivocal and rather
confusing passage:

         If he only had 9 years of coal dust exposure and smoked 25 years, the
         coal dust exposure would be minimal, and perhaps, not a significant
         contribution to his conditions. If he indeed had 16 years, then it would
         probably be significant and therefore be a cause of the miner’s condition.
         He does have a mild impairment. It is related primary [sic] to the


         1
           The relevant chest x-ray was taken on October 30, 2002. Dr. Baker interpreted it as showing
pneumoconiosis. However, another doctor, Dr. Halbert, declared the same x-ray negative for
pneumoconiosis. Dr. Halbert, as both a B-reader and a board-certified radiologist, had superior
qualifications to Dr. Baker. Both the ALJ and the Board concluded that it was appropriate to discredit Dr.
Baker’s reading of the x-ray in favor of Dr. Halbert’s.
No. 08-4094           Greene v. King James Coal Mining, Inc., et al.                           Page 4


        obstructive airway disease and chronic bronchitis, as well as his resting
        arterial hypoxemia. These in turn can be related to pneumoconiosis as
        his coal dust exposure may have contributed to some extent in the
        causation of these problems.
        Dr. Westerfield, a board-certified pulmonologist and B-reader,2 examined Greene
on November 5, 2002. He noted that Greene had a 30- to 50-pack-year smoking history,
which he described as “truly dangerous.” He took a chest x-ray and interpreted it as
negative for pneumoconiosis. Dr. Westerfield noted moderate obstructive pulmonary
impairment, which he found was inconsistent with pneumoconiosis. Instead, he
attributed the impairment to cigarette smoking.                In formulating his opinion, Dr.
Westerfield assumed a 20-year underground coal mining history. He did, however,
discount Greene’s coal mine employment as a cause of the pulmonary impairment
because that employment ended in 1985, and the respiratory symptoms had appeared
only in recent years.3 Dr. Westerfield ultimately concluded that Greene had “no medical
condition that was caused, contributed to or aggravated by his coal-dust exposure.”

        Dr. Broudy -- like Dr. Westerfield, a board-certified pulmonologist and B-reader
-- examined Greene’s medical records and the reports of the other examining physicians.
In his report, Dr. Broudy opined that, with only a single positive x-ray interpretation, the
medical evidence did not support a diagnosis of pneumoconiosis. Dr. Broudy also found
that Greene did not have any pulmonary disease that was caused, contributed to, or
aggravated by coal dust exposure. Rather, he attributed Greene’s pulmonary disease and
dysfunction to chronic bronchitis and pulmonary emphysema caused by cigarette
smoking. In addition, Greene had typical chronic obstructive airways disease, also due
to smoking.

        On August 7, 2003, the District Director issued a proposed decision denying
benefits because (1) Greene failed to demonstrate a change in any of the applicable

        2
          A “B-reader” has demonstrated proficiency in assessing and classifying x-rays for
pneumoconiosis by successfully completing an examination conducted by or on behalf of the Department
of Health and Human Services. 20 C.F.R. § 718.202(a)(1)(ii)(E).
        3
           In a footnote, the ALJ made this comment: “Dr. Westerfield’s opinion is arguably contrary to
the revised regulations, which recognize that pneumoconiosis is a latent and progressive disease which
may first become detectable after cessation of coal mine dust exposure. See 20 C.F.R. § 718.201(c).”
No. 08-4094        Greene v. King James Coal Mining, Inc., et al.                  Page 5


conditions of entitlement since the denial of his initial claim; and (2) the evidence did
not show that Greene had pneumoconiosis. Greene requested a hearing, but the ALJ
remanded because Dr. Baker’s initial report failed to credibly address all the conditions
of entitlement. After Dr. Baker provided the supplemental report discussed above (dated
August 17, 2004), a hearing was held before the ALJ on February 2, 2006.

       The ALJ issued a decision and order denying benefits, finding that while Greene
had established a change in one of the conditions of entitlement (total disability), the
evidence failed to establish the existence of pneumoconiosis. Specifically, the ALJ
found that the x-ray evidence, which was conflicting, did not support a finding of coal
worker’s pneumoconiosis. Greene never appealed that finding, and we do not revisit it
here. Discounting the opinions of Drs. Baker and Brown, the ALJ also determined that
the medical opinion evidence was insufficient to establish either clinical or legal
pneumoconiosis. As to clinical pneumoconiosis, the ALJ concluded that Drs. Baker and
Brown failed to support or explain their diagnoses in light of the credible negative x-ray
evidence. With regard to legal pneumoconiosis, the ALJ found Dr. Brown’s opinion
conclusory, and discounted it for failing to address the possible effect of Greene’s heavy
smoking history. Likewise, the ALJ found that Dr. Baker underestimated Greene’s
smoking history and overestimated the duration of his coal mine employment. The ALJ
also refused to credit the opinions of Drs. Westerfield and Broudy, finding that they
relied upon questionable generalizations regarding the comparative effects of cigarette
smoking and coal dust exposure. Because Greene bore the burden of proof, the
inadequate analysis in the negative opinions did nothing to advance his claim.

       Greene appealed the ALJ’s decision to the Board, arguing that the ALJ erred by
failing to credit the medical opinions of Drs. Baker and Brown. Greene’s appeal to the
Board also attacked the ALJ’s purported reliance upon the opinions of Drs. Westerfield
and Broudy. King James Coal cross-appealed. A majority of the Board affirmed,
concluding that the ALJ’s opinion was supported by substantial evidence. The Board
declined a remand, which the Director had requested, finding that Dr. Baker had
provided Greene with a “complete pulmonary evaluation,” thus fulfilling the DOL’s
No. 08-4094         Greene v. King James Coal Mining, Inc., et al.                   Page 6


obligation. Two judges dissented from this portion of the ruling, maintaining that
remand was the proper remedy due to defects in the reasoning underlying Dr. Baker’s
report.

          Greene now appeals the Board’s decision to this court, raising the following
issues: (1) whether the ALJ’s decision to reject the medical opinions of Drs. Baker and
Brown was supported by substantial evidence; and (2) whether the ALJ’s decision to
credit the medical opinions of Drs. Westerfield and Broudy was erroneous because those
opinions are hostile to the Act. In the alternative, Greene argues that if the ALJ properly
rejected Dr. Baker’s opinion as unreasoned, then the Board erred by refusing to remand
the case so that Greene can receive a “complete pulmonary evaluation” within the
meaning of 20 C.F.R. § 725.406(a).

                                            II.

          The court reviews the Board’s legal conclusions de novo. Paducah Marine Ways
v. Thompson, 

, 133 (6th Cir. 1996). While we must affirm the Board’s
decision “if the Board has not committed any legal error or exceeded its statutory scope
of review of the ALJ’s factual determinations,” our review on appeal is “focused on
whether the ALJ – not the Board – had substantial evidence upon which to base his . . .
decision.” Jonida Trucking, Inc. v. Hunt, 

, 742 (6th Cir. 1997). The ALJ’s
findings are conclusive if they are supported by substantial evidence and accord with the
applicable law. Tenn. Consol. Coal Co. v. Kirk, 

, 606 (6th Cir. 2001).
“‘Substantial evidence’ means ‘such relevant evidence as a reasonable mind might
accept as adequate to support a conclusion.’” Kolesar v. Youghiogheny & Ohio Coal
Co., 

, 729 (6th Cir. 1985) (quoting Richardson v. Perales, 

,
401 (1971)). “[I]n referring to a singular ‘reasonable mind,’ the Supreme Court has
directed us to uphold decisions that rest within the realm of rationality; a reviewing court
has no license to ‘set aside an inference merely because it finds the opposite conclusion
more reasonable or because it questions the factual basis.’” Piney Mountain Coal Co.
v. Mays, 

, 756 (4th Cir. 1999) (quoting Smith v. Director, OWCP, 

, 1057 (7th Cir. 1988) and discussing 

).
No. 08-4094        Greene v. King James Coal Mining, Inc., et al.                  Page 7


       Where the substantial evidence requirement is satisfied, the court may not set
aside the ALJ’s findings, “even if [the court] would have taken a different view of the
evidence were we the trier of facts.” Ramey v. Kentland Elkhorn Coal Corp., 

, 486 (6th Cir. 1985). In deciding whether the substantial evidence standard is
satisfied, we consider whether the ALJ adequately explained the reasons for crediting
certain testimony and documentary evidence over other testimony and documentary
evidence. Peabody Coal Co. v. Hill, 

, 415 (6th Cir. 1997). “A remand or
reversal is only appropriate when the ALJ fails to consider all of the evidence under the
proper legal standard or there is insufficient evidence to support the ALJ’s finding.”
McCain v. Director, OWCP, 58 Fed. App’x 184, 201 (6th Cir. 2003) (citing Cornett v.
Benham Coal, Inc., 

, 575 (6th Cir. 2000) and Director, OWCP v. Rowe, 

, 255 (6th Cir. 1983)).

                                           III.

       To establish entitlement to benefits, the claimant must prove by a preponderance
of the evidence that (1) he has pneumoconiosis; (2) his pneumoconiosis arose at least in
part out of his coal mine employment; (3) he is totally disabled; and (4) the total
disability is due to pneumoconiosis (disability causation). See 20 C.F.R. §§ 718.202-204
(2000); Adams v. Director, OWCP, 

, 820 (6th Cir. 1989). The regulations
provide four methods of establishing the existence of pneumoconiosis: (1) by chest
x-ray; (2) by autopsy or biopsy evidence; (3) by certain presumptions described in 20
C.F.R. §§ 718.304-718.306; or (4) by reasoned medical opinion. 20 C.F.R. § 718.202.
Only the fourth method is at issue in this appeal.

       Pneumoconiosis is defined as “a chronic dust disease of the lung and its sequelae,
including respiratory and pulmonary impairments, arising out of coal mine
employment.” 30 U.S.C. § 902(b). It includes both “clinical” pneumoconiosis and
“legal” pneumoconiosis. 20 C.F.R. § 718.201(a). The regulations define clinical (or
medical) pneumoconiosis as “those diseases recognized by the medical community as
pneumoconiosis, i.e., the conditions characterized by permanent deposition of substantial
amounts of particulate matter in the lungs and the fibrotic reaction of the lung tissue to
No. 08-4094        Greene v. King James Coal Mining, Inc., et al.                  Page 8


that deposition caused by dust exposure in coal mine employment.”              20 C.F.R.
§ 718.201(a)(1). Such conditions include, but are not limited to, “coal workers’
pneumoconiosis, anthracosilicosis, anthracosis, anthrosilicosis, massive pulmonary
fibrosis, silicosis or silicotuberculosis, arising out of coal mine employment.” 

statutory) pneuomoconiosis is a broader term. Cornett v. Benham Coal, Inc., 

, 575 (6th Cir. 2000). It describes “any chronic lung disease or impairment and
its sequelae arising out of coal mine employment[,]” including “any chronic restrictive
or obstructive pulmonary disease arising out of coal mine employment.” 20 C.F.R.
§ 718.201(a)(2).

       A. Pneumoconiosis

       Greene sought to establish pneumoconiosis by way of x-ray evidence and
reasoned medical opinion.

       The ALJ found that the x-ray evidence did not establish pneumoconiosis and
Greene has not appealed that conclusion.

       In assessing the medical evidence, the ALJ considered the opinions of Drs.
Baker, Brown, Westerfield, and Broudy. Drs. Baker and Brown both concluded that
Greene suffered from pneumoconiosis, while Drs. Westerfield and Broudy opined in the
negative. Greene argues that, in concluding that he failed to meet his burden of
establishing the existence of the disease, the ALJ discounted the opinions of Drs. Baker
and Brown and accorded significant weight to the negative opinions of Drs. Westerfield
and Broudy. On appeal, he attacks this treatment of the four medical opinions.

               1. Dr. Baker’s Opinion

       Greene argues that the ALJ’s decision to reject Dr. Baker’s opinion was not
supported by substantial evidence. We disagree.

       “The determination as to whether [a physician’s] report was sufficiently
documented and reasoned is essentially a credibility matter. As such, it is for the
factfinder to decide.” Director, OWCP v. Rowe, 

, 255 (6th Cir. 1983). To
No. 08-4094        Greene v. King James Coal Mining, Inc., et al.                   Page 9


make this determination, the ALJ must “examine the validity of the reasoning of a
medical opinion in light of the studies conducted and the objective indications upon
which the medical opinion or conclusion is based.” 

       In his opinion, Dr. Baker cited “abnormal chest x-ray & coal dust exposure” as
the bases for his pneumoconiosis diagnosis. As explained previously, the ALJ properly
concluded that the x-ray evidence did not support a finding of pneumoconiosis. Dr.
Baker’s reliance upon that evidence as support for his diagnosis was misplaced. The
ALJ permissibly discounted Dr. Baker’s reference to coal dust exposure because it was
premised upon inaccurate accounts of Greene’s coal mine employment and smoking
history. Dr. Baker’s opinion was based upon a 16-year history of underground coal
mining work and a 12.5 pack-year smoking history. Those figures diverged significantly
from the ALJ’s factual findings, which credited Greene with 11 years of coal mine
employment and 45 pack-years of smoking. The ALJ appropriately considered these
miscalculations in weighing Dr. Baker’s opinion. Finding serious flaws in the two stated
bases for Dr. Baker’s pneumoconiosis diagnosis, the ALJ properly viewed that opinion
as lacking adequate support. When a physician’s opinion lacks support and detail, the
ALJ may disregard it. See Wolf Creek Collieries v. Director, OWCP, 

, 517
(6th Cir. 2002) (citing Risher v. OWCP, 

, 331 (8th Cir. 1991)).

       Relying on Cornett v. Benham Coal, Inc., 

(6th Cir. 2000), Greene
also argues that the ALJ improperly criticized Dr. Baker’s opinion for failing to explain
the effect cigarette smoking, as distinguished from coal dust exposure, had on the
diagnosis. The argument is without merit because Cornett and the instant case are
distinguishable. In Cornett, the court held that “the ALJ committed legal error by using
the contributing causality of smoking as a reason for discounting” the opinions of two

. Dr. Baker acknowledged that both smoking and coal dust
contributed to Greene’s condition, but his discussion of the interplay of these factors was
vague and equivocal. See Griffith v. Director, OWCP, 

, 186 (6th Cir. 1995)
(affirming ALJ’s decision to discredit medical opinion as equivocal where physician
named both smoking and coal dust exposure as possible causes). It was also based upon
No. 08-4094        Greene v. King James Coal Mining, Inc., et al.                 Page 10


erroneous information that significantly understated Greene’s smoking history and
overstated the length of his coal mine employment. Under the circumstances, the ALJ’s
criticisms of Dr. Baker’s opinion were well within the ALJ’s discretion, and the decision
to discredit Dr. Baker’s finding of pneumoconiosis was supported by substantial
evidence.

               2. Dr. Brown’s Opinion

       The ALJ similarly discounted the opinion of Dr. Brown, Greene’s treating
physician. Greene challenges the ALJ’s analysis, arguing that the ALJ mischaracterized
Dr. Brown’s opinion by stating that Dr. Brown “failed to state a basis for these diagnoses
apart from ‘history.’” Greene maintains that Dr. Brown considered numerous factors
beyond Greene’s history and supported her opinion with adequate reasoning. Here
again, Greene essentially challenges the ALJ’s credibility determination.

       Contrary to Greene’s contention, the ALJ did not mischaracterize Dr. Brown’s
opinion. Dr. Brown’s explanation of the pneumoconiosis finding cited an x-ray
diagnostic of emphysema, rather than pneumoconiosis, and summarily stated that
Greene’s emphysema had “by history been related to pneumoconiosis.” Dr. Brown tied
Greene’s emphysema to coal dust exposure, but in doing so relied upon an erroneous
account of Greene’s coal mine employment (18 years), which was inconsistent with the
11 years of coal mine employment found by the ALJ. Dr. Brown, who was not a
pulmonary expert, offered no basis for attributing Greene’s emphysema to coal dust
rather than his lengthy and significant history of cigarette smoking. Under these
circumstances, the ALJ acted within her discretion in discrediting Dr. Brown’s
pneumoconiosis finding.

       Greene also contends that the ALJ erred in discounting Dr. Brown’s opinion
because, as his treating physician, Dr. Brown’s opinion was entitled to greater weight.
We disagree. The ALJ need not defer to a treating physician’s opinion. Peabody Coal
Co. v. Groves, 

, 834 (6th Cir. 2002). A medical opinion is not entitled to
any additional weight simply because it was rendered by the claimant’s treating
No. 08-4094         Greene v. King James Coal Mining, Inc., et al.               Page 11


physician. Eastover Mining Co. v. Williams, 

, 511-13 (6th Cir. 2003).
According to the regulations,

       . . . In appropriate cases, the relationship between the miner and his
       treating physician may constitute substantial evidence in support of the
       adjudication officer’s decision to give that physician’s opinion
       controlling weight, provided that the weight given to the opinion of a
       miner’s treating physician shall also be based on the credibility of the
       physician’s opinion in light of its reasoning and documentation, other
       relevant evidence and the record as a whole.
20 C.F.R. § 718.104(d)(5). Thus, “the weight to be accorded a treating physician’s
opinion is based on its power to persuade.” Mountain Clay, Inc. v. Spivey, 172 Fed.
App’x 641, 650 (6th Cir. 2006) (citing 

; 20 C.F.R.
§ 718.104(d)).

       Here, the ALJ adequately explained her reasons for finding Dr. Brown’s opinion
poorly reasoned and documented. The ALJ did not mischaracterize Dr. Brown’s opinion
and based her analysis on substantial evidence. Dr. Brown’s status as Greene’s treating
physician did nothing to improve upon the analytical and documentary defects the ALJ
found in the report. Accordingly, we find no error in the ALJ’s treatment of Dr. Brown’s
opinion.

       Because we conclude that the ALJ committed no error in giving little weight to
all of Greene’s affirmative evidence of pneumoconiosis, Greene could not have met his
burden of proof, even in the absence of countervailing evidence. Accordingly, we must
affirm the decision denying benefits.

                 3. Dr. Westerfield’s and Dr. Broudy’s Opinions

       Greene also attacks the ALJ’s purported reliance on the opinions of Drs.
Westerfield and Broudy that he did not suffer from pneumoconiosis.

       Greene argues that Dr. Westerfield attributed no significance to his 15-20 years
of underground mining (which the ALJ found to be an overestimate) in the causation of
his lung problems but, rather, attributed his respiratory disability to cigarette smoking
No. 08-4094              Greene v. King James Coal Mining, Inc., et al.                          Page 12


alone.4 He also asserts that, because Dr. Westerfield examined him only once, his
opinion should be afforded less weight than Dr. Brown’s.5                         He challenges Dr.
Westerfield’s opinion because he was hired by King James Coal solely for the purpose
of providing a negative report and he asserts that Dr. Baker’s opinion should hold more
weight because Dr. Baker was employed by the DOL.6 Finally, Greene maintains that
Dr. Westerfield’s opinion was hostile to the Act,7 and therefore the ALJ erred in relying
upon it.

         Greene’s challenges to Dr. Broudy’s opinion -- that the opinion should be
discounted because he did not examine Greene and that he was biased because he was
hired and paid by King James Coal -- largely mirror his objections to Dr. Westerfield’s
opinion. Like Dr. Westerfield, Dr. Broudy also expressed the view that obstructive,
rather than restrictive, pulmonary impairment was not indicative of pneumoconiosis.
Greene asserts that this viewpoint contravenes the regulatory definition of the disease,
rendering Dr. Broudy’s opinion hostile to the Act.

         Greene actually somewhat misconstrues the ALJ’s opinion with respect to Drs.
Westerfield and Broudy. Although the ALJ did, indeed, give their opinions more weight
when it came to interpreting the x-ray evidence (because they had superior credentials
as compared to the other two doctors)8 and in determining that Greene had not

         4
          As we already noted, however, Greene waived any challenge to the ALJ’s factual finding
regarding the length of his coal mine employment by failing to raise it before the Board. In any event, Dr.
Westerfield thoroughly explained why he believed Greene’s “truly dangerous” smoking history, not coal
dust exposure, was the source of Greene’s respiratory ailments.
         5
           This argument is neither true (Dr. Westerfield examined Greene twice) nor, in any event, a valid
basis for discounting an otherwise meritorious medical opinion. See Howard v. Martin County Coal Corp.,
89 Fed. App’x 487, 493 (6th Cir. 2003) (citing 

). The number of patient
examinations has no bearing on the analysis; it is the opinion’s reasoning and supporting foundation that
matter.
         6
          The Supreme Court has held, however, that bias cannot be presumed merely because an expert
is compensated for his opinion. See 

. Greene fails to identify any other facts
suggestive of bias.
         7
           Greene argues hostility to the Act in two respects: first, Dr. Westerfield mentioned at his
deposition that Greene’s lung problems did not arise until long after he had quit coal mining, in
contravention of 20 C.F.R. § 718.201(c); and, second, Dr. Westerfield noted that pneumoconiosis is
typically a restrictive, not obstructive, impairment, in contravention of 20 C.F.R. § 718.201(a)(2).
         8
             The ALJ’s treatment of the x-ray evidence has not been challenged on appeal.
No. 08-4094        Greene v. King James Coal Mining, Inc., et al.              Page 13


established clinical pneumoconiosis (because their opinions on this issue were better
documented), she did not credit their opinions regarding legal pneumoconiosis any more
than those of Drs. Baker and Brown. In fact, after summarizing the opinions of the four
doctors on this issue, the ALJ stated:

       Thus, Dr. Brown and Dr. Baker have relied upon little more than
       symptomatology, test results, and coal dust exposure over a certain
       period of time, without explaining how they reached their conclusions
       based upon the symptomatology and test results (and, in the case of Dr.
       Brown, how cigarette smoking factored into her opinion), while Dr.
       Westerfield and Dr. Broudy have reached their conclusions based upon
       questionable generalizations as to the comparative effects of cigarette
       smoking and coal mine dust, which generalizations are unsupported, even
       if not hostile to the Act. . . .
       . . . None of the opinions, in my view, adequately address the role that
       cigarette smoking and/or coal mine dust exposure played in this
       individual case. Dr. Brown did not address the possible effect of
       cigarette smoking; Dr. Baker assumed the two factors worked together,
       based upon an arbitrary cutoff of ten years of coal mine employment and
       an underestimated smoking history; and Drs. Westerfield and Broudy
       relied upon particular generalized assumptions without citing support for
       those assumptions. I do not find any of these opinions to be persuasive.
       However, inasmuch as it is the Claimant’s burden of proof, he is not
       assisted by the inadequacy of the analysis in the medical opinions.
       Accordingly, I find that Claimant has failed to establish legal
       pneumoconiosis based upon the medical opinion evidence.
Decision and Order Denying Benefits, at 20-21. Clearly, the ALJ rejected all of the
medical opinions as inadequate on the issue of legal pneumoconiosis and concluded that
Greene, therefore, failed to meet his burden of proof on that issue.

       Since the ALJ rejected all four doctors’ opinions, Greene’s assertion that the
opinions of Drs. Westerfield and Broudy should not have been considered because they
were hostile to the Act is a red herring.

       The “‘hostility-to-the-Act’ rule ‘allows an ALJ to disregard medical testimony
when a physician’s testimony is affected by his subjective personal opinions about
pneumoconiosis which are contrary to the congressional determinations implicit in the
Act’s provisions.’” Blakley v. Amax Coal Co., 

, 1321 (7th Cir. 1995)
No. 08-4094          Greene v. King James Coal Mining, Inc., et al.                Page 14


(quoting Pancake v. AMAX Coal Co., 

, 1256 (7th Cir. 1988)). Application
of this rule requires determining “whether and to what extent those hostile opinions
affected the medical diagnosis.” Wetherill v. Director, OWCP, 

, 382 (7th
Cir. 1987)). Standing alone, however, a physician’s expression of a view that conflicts
with the Act is not sufficient to bar consideration of that opinion. 

.

          The ALJ actually noted, in the section of the decision where she laid out all the
medical evidence, that Dr. Westerfield had made statements that were arguably hostile
to the Act. See, Decision at 9, notes 9 and 10. In particular, Dr. Westerfield had noted
that Greene’s respiratory symptoms arose after he stopped working as a coal miner and
cited this fact as a reason for discounting pneumoconiosis, which is clearly contrary to
the regulations recognizing that pneumoconiosis is “a latent and progressive disease
which may first become detectable only after the cessation of coal mine dust exposure.”
20 C.F.R. § 718.201(c). Both Drs. Westerfield and Broudy indicated their belief that
pneumoconiosis generally causes a restrictive lung pattern, whereas Greene exhibited
chronic obstructive lung disease. This, too, is contrary to the regulations which define
pneumoconiosis to include “any chronic restrictive or obstructive pulmonary disease
arising out of coal mine employment.” 20 C.F.R. § 718.201(a)(2).

          It is apparent that the ALJ found no need to address this issue because she
rejected the doctors’ opinions on other grounds.

          For the reasons discussed above, we conclude that there was substantial evidence
to support the ALJ’s decision to deny Greene’s claim for benefits because he failed to
establish that he had pneumoconiosis.

          B. Complete Pulmonary Evaluation

          Both Greene and the Director claim that if Dr. Baker’s opinion was so poorly
reasoned and documented as to justify the ALJ’s refusal to rely upon it, then the case
must be remanded so the DOL can provide him with a proper evaluation. The
regulations entitle each claimant to a “complete pulmonary evaluation,” which “includes
No. 08-4094            Greene v. King James Coal Mining, Inc., et al.                            Page 15


a report of physical examination, a pulmonary function study, a chest roentgenogram
[x-ray] and, unless medically contraindicated, a blood gas study.” 20 C.F.R.
§ 725.406(a).

         King James Coal argued that Greene waived this argument by failing to raise it
before the district director or the ALJ. The Board disagreed, concluding that the
Director had standing as a party-in-interest to raise the issue and that the Director’s
failure to raise it earlier did not bar the Board from considering the issue for the first time
on appeal. In a divided opinion, the en banc Board rejected the Director’s remand
argument, finding that the deficiencies in Dr. Baker’s opinions were due to inaccurate
information provided by Greene, not by any failing on the DOL’s part. Writing in
dissent, Administrative Appeals Judge McGranery (joined by Administrative Appeals
Judge Hall) opined that remand should have been ordered because the ALJ discredited
Dr. Baker’s opinion at least in part for failing to explain how Greene’s symptomatology
and test results supported the doctor’s conclusion that Greene’s respiratory impairment
was caused by his coal mine employment. In this appeal, the Director filed a brief
advocating remand, arguing that the Board majority misconstrued the Director’s position
and that, in essence, the dissenters were correct.

         Turning first to the waiver issue, in rejecting King James Coal’s argument the
Board relied upon Hodges v. Bethenergy Mines, Inc., 18 BLR 1-84, 1-87-88 (1994).9
The Board took the position that whether Dr. Baker’s opinion fulfilled the DOL’s
regulatory obligations was a question the Director could raise for the first time on appeal.
The Director preserved the argument for Greene’s benefit, and Greene’s failure to raise
it before either the district director or the ALJ is immaterial. To the extent it was
Greene’s responsibility to preserve the argument, the Board exercised its discretion to
excuse his failure.10 King James Coal fails to convince us that the Board abused its


         9
         See, Hodges v. Bethenergy Mines, Inc., No. 93-1849 BLA, 

, at *3 (DOL
Ben.Rev.Bd. Sept. 29, 1994).
         10
             Clearly, Greene did not present any objections to the adequacy of Dr. Baker’s report to either
the district director or the ALJ because he did not consider it inadequate; it was the ALJ who reached that
conclusion. However, Greene did fail to raise the issue in his appeal to the Board.
No. 08-4094        Greene v. King James Coal Mining, Inc., et al.                 Page 16


discretion in doing so. Accordingly, we will consider the merits of the remand
argument.

       No one contends that Dr. Baker failed to administer any of the necessary tests.
Greene even concedes that Dr. Baker’s opinion was documented by a report of a
physical examination, a pulmonary function study, a chest x-ray, and a blood gas study.
The DOL fulfills its obligations under the Act and its implementing regulations by
providing “a medical opinion that addresses all of the essential elements of entitlement.”
Smith v. Martin County Coal Corp., 233 Fed. App’x 507, 512 (6th Cir. 2007)
(unpublished) (citing Gallaher v. Bellaire Corp., 71 Fed. App’x 528, 531 (6th Cir. 2003)
(unpublished)). Dr. Baker performed all the required diagnostic tests and provided a
report, as supplemented, addressing each of the elements a claimant must prove to obtain
benefits under the Act. However, the ALJ found Dr. Baker’s opinion unpersuasive
because it did not explain “how [he] reached [his] conclusions based upon the
symptomatology and test results[.]”

       The situation here is indistinguishable from our opinions in Keith v. Director,
OWCP, No. 92-3433, 

(6th Cir. Nov. 25, 1992) (unpublished),
Gallaher, and Smith. Although these three cases are all unpublished and not binding on
us, we find them persuasive.

       In Keith, the same Dr. Baker who rendered his medical opinion in Greene’s case,
also rendered an opinion regarding claimant Keith, concluding that his impairment was
“mild or minimal.” On appeal, the Director argued for remand asserting that Dr. Baker’s
report did not provide the miner with “a complete pulmonary examination[.]” The court
concluded that, although Dr. Baker “could have gone into greater detail in providing an
explanation for his answer [with respect to how the mild or minimal severity of the
impairment might prevent the claimant from performing mining work], . . . the lack of
more detailed explanation does not render Dr. Baker’s report inadequate in fulfilling the
DOL’s obligation to provide Keith with a full pulmonary examination and report.”
Keith, 

, at * 3. The court concluded that there was substantial evidence
to support the ALJ’s determination that Keith was not totally disabled. In so doing, the
No. 08-4094           Greene v. King James Coal Mining, Inc., et al.                          Page 17


court distinguished on the facts the two cases which the director had cited in his brief.

v. Director, OWCP, 

(8th Cir. 1984) and
Johnson v. Director, OWCP, 

, No. 89-3211 (6th Cir. Nov. 20, 1989)
(where medical opinions were discredited due to insufficient quality or lack of valid
objective tests).11 Dr. Baker rendered an almost identical opinion in his reports on
Greene, finding his impairment to be “mild” and concluding that he did have the
respiratory capacity to perform the work of a coal miner or comparable work in a
dust-free environment. As in Keith, this report satisfies the DOL’s duty to provide a
“complete pulmonary evaluation.”

        In Gallaher, the claimant argued that if the ALJ did not assign controlling weight
to the DOL-sponsored physician’s diagnosis of pneumoconiosis, then he was entitled to
a remand to obtain a complete, credible pulmonary evaluation. The ALJ rejected the
physician’s finding of pneumoconiosis “because it was an unexplained contradiction of
his diagnosis from one year earlier, and appeared to be based only on an X-ray reading
that was called into question.” Gallaher, 71 Fed. App’x at 531. On appeal, the claimant
sought remand, citing the defects in the medical opinion; but this court rejected the
claimant’s argument. While the doctor’s report was unpersuasive and poorly reasoned,
“[t]his is not the same as failing to address the essential elements of entitlement at all.”

in Gallaher, the report provided by the DOL was poorly reasoned and
ultimately failed to persuade the ALJ of the claimant’s entitlement to benefits. However,
because the report addressed all the essential elements of entitlement, it constituted a
“complete pulmonary evaluation” as defined by the regulations, fulfilling the DOL’s
obligation.

        Finally, in Smith, this court concluded that the claimant had received a “complete
pulmonary evaluation.” Smith was also examined by the same Dr. Baker who examined
Greene. Dr. Baker concluded that Smith had an occupational lung disease caused by his
coal mine employment as evidenced by “abnormal chest x-ray” and “coal dust


         11
           In Newman, the ALJ also found that “the physicians were biased and less than 

.
No. 08-4094            Greene v. King James Coal Mining, Inc., et al.                             Page 18


exposure.” Citing Keith, the Smith court concluded that all the necessary elements had
been addressed by Dr. Baker and all the necessary tests performed and that it was not
necessary for him to “provide exhaustive detail or explanation for his diagnosis
regarding disability causation[.]” 233 Fed.Appx. at 513. It further concluded that failure
to give controlling weight to the DOL-sponsored physician’s opinion did not amount to
a denial of a “complete pulmonary evaluation.” 

Keith, Gallaher, and Smith, Dr. Baker conducted all the necessary tests on
Greene and his report addressed all the elements of entitlement, even if lacking in
persuasive detail.12

         In the end, DOL’s duty to supply a “complete pulmonary evaluation” does not
amount to a duty to meet the claimant’s burden of proof for him. In some cases, that
evaluation will do the trick. In other cases, it will not. But the test of “complete[ness]”
is not whether the evaluation presents a winning case. The DOL meets its statutory
obligation to provide a “complete pulmonary evaluation” under 30 U.S.C. § 923(b) when
it pays for an examining physician who (1) performs all of the medical tests required by


         12
           The Director relies on “numerous unpublished decisions” to argue for a remand, including
Smith and Gallaher, already discussed as not showing support for the Director’s position, as well as
Southeast Coal Co. v. Combs, No. 95-3054, 

at *6 (6th Cir. Aug. 30, 1996) and Clark
v. Karst-Robbins Coal Co., No. 93-4173, 

at *3 (6th Cir. Dec. 20, 1994) (per curiam).
          In Combs, despite the fact that previous claims had been denied, the ALJ awarded benefits on a
new claim (and the Board affirmed) even though there was no new medical evidence. A panel of this court
reversed the award, criticizing the ALJ for relying on the old, already-rejected medical evidence and noting
that “a material change cannot be based on an ALJ’s disagreement with the previous characterization of
the strength of the evidence.” 

at *4 (citing Sharondale Corp. v. Ross, 

, 999
(6th Cir. 1994)). Although the claimant had submitted “new evidence” in the form of a report from a Dr.
Turbeville, the report did not reference any new objective data in support of the doctor’s conclusion that
the claimant was totally disabled by Black Lung Disease. The court concluded that the doctor’s opinion
was “unreasoned and unsubstantiated as a matter of law.” 

was remanded for a “complete
pulmonary examination” because the award had been based solely on old evidence already rejected during
the prior administrative proceedings. Combs is distinguishable on its facts from the instant case where,
after the claimant filed his new claim on July 29, 2002, a complete pulmonary examination was conducted
by Dr. Baker.
          In Clark, benefits were awarded by the ALJ, but the award was reversed by the Board as
unsupported by medical evidence. The claimant appealed and a panel of this court concluded that
“substantial evidence supports the [Board’s] determination that the ALJ properly discounted or discredited
each of the medical reports submitted in this case on the causation issue.” 

at *2. As a
result, the record “contain[ed] no credible medical examination report[]” upon which to base an award.

Therefore, the Clark court remanded for a complete pulmonary examination. Clark, as an
unpublished decision, is merely persuasive and not precedential. In any event, we distinguish it as standing
only for the proposition that an award of benefits cannot be based on a complete lack of medical evidence.
Obviously, a denial of benefits is completely in order where there is no supporting medical evidence.
No. 08-4094         Greene v. King James Coal Mining, Inc., et al.                  Page 19


20 C.F.R. §§ 718.101(a) and 725.406(a), and (2) specifically links each conclusion in his
or her medical opinion to those medical tests. Together, the completion of these tasks
will result in a medical opinion under 20 C.F.R. § 718.202(a)(4) that is both documented,
i.e., based on objective medical evidence, and reasoned.

        Here, while the ALJ declined to credit Dr. Baker’s opinion, that does not
establish that the DOL failed to meet its statutory obligation. All of the required tests
were performed, and Dr. Baker, albeit briefly, linked his conclusions to those tests. We
have no doubt that Dr. Baker could have explained his reasoning more carefully. And
at some point a sufficiently slipshod analysis might warrant a remand for a “complete”
evaluation. This is not such a case, however.

        Nor do we think that two Eighth Circuit decisions compel a different result. In
one of them, Cline v. Director, 

(8th Cir. 1990), the doctor failed to abide by
a clear statutory requirement: obtaining a chest x-ray. As the court explained, “Dr.
Briney diagnosed Cline’s condition without the benefit of a chest X-ray interpretation.
Thus, the incomplete examination had the effect of making the diagnosis unreasoned.
The X-ray which was taken on the day Dr. Briney examined Cline was interpreted
positively by the Department’s qualified reader. However, Dr. Briney failed to base his
diagnosis upon any X-ray interpretations, as required by 20 C.F.R. § 718.104 [“A report
of any physical examination . . . shall include . . . [t]he results of a chest 

. In the other (earlier) case, Newman v. Director, 

(8th Cir.
1984), the opinion contains the following language: “We cannot say that the Department
of Labor fulfilled its responsibility for providing a complete pulmonary evaluation by
arranging to obtain an informed medical opinion regarding [the claimant]’s condition,
but then rejecting that opinion as not credible. On remand, administrative personnel
should either accept the import of the medical opinion of record, or obtain a more
reliable medical opinion.” 

But the opinion contains no analysis of DOL’s
obligations, and the only thing it says about the medical opinion suggests that it should
have been rejected --based, indeed, on any understanding of a “complete pulmonary
examination.” See 

rejected the above medical opinions, concluding that
No. 08-4094        Greene v. King James Coal Mining, Inc., et al.          Page 20


the physicians were biased and less than thorough, and that the reports were not of
sufficient quality to warrant credence.”).

       We conclude that Greene received a “complete pulmonary evaluation” in
compliance with DOL regulations and, therefore, no remand is required.

                                             IV.

       For the reasons set forth above, we AFFIRM the decision and order of the
Benefits Review Board denying Greene’s claim for black lung benefits.