MICHAEL FRETZIN, MD appears in the CMS NPPES registry as a Procedural Dermatology Physician provider holding MD credentials at 600 W LAKE COOK RD, BUFFALO GROVE, IL, 60089, with a listed phone of (847) 459-6611. NPI 1134118987 was issued on 10/14/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FRETZIN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,516 prescription claims written by this provider, covering 636 Medicare beneficiaries and totaling roughly $772K in drug spend, split 8% brand-name and 92% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 95.6238/100 for the 2023 performance year (Quality 92.4279, Cost 92.9848), compared with the national average of 83.1.

Procedural Dermatology Physician is a narrow specialty nationwide, with 679 enrolled providers across 48 states and an average of 664 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.