Mark Finkelstein, CRT appears in the CMS NPPES registry as a Adult Companion provider holding CRT credentials at 3615 N 16TH ST, Phoenix, AZ, 85016, with a listed phone of (602) 274-1581. NPI 1679879647 was issued on 02/08/2011.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal, many Adult Companion providers operate outside Part D entirely.

Adult Companion is a mid-sized specialty nationwide, with 11,056 enrolled providers across 53 states and an average of 857 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.

Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.