An OASAS (Office of Alcohol & Substance Abuse Services) assessment is required through a DMV certified provider, and the judge may mandate the Drinking Driver Program. If the OASAS determines some type of counseling is required, a judge may mandate that care as part of a conditional discharge. There are many permutations of counseling and clinical intervention that can stem from a DWI conviction, but “rehab”, as in in-patient, is not strictly required under any statute. You should speak to a DWI Attorney in your area.