The doctor may have judicial immunity and be immune from a lawsuit, and it is not clear what insurance you are referring to (although there is probably no liability by an insurance carrier that covered the cost of the doctor.)
That being said, you should immediately consult with an attorney with experience in professional malpractice to discuss the particulars of your case; there may be facts and nuances that create the possibility of liaibility.
DO NOT WAIT UNTIL THE ATTORNEY GENERAL ACTS; you have time limits on any case you may be able to bring that will not be affected by the AG's decisions.
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