Dr. Frederick Greenstein, M.D.

With 20 years of practice, Dr. Frederick Greenstein is an established urology provider, M.D., after earning their medical degree at State University Of New York Downstate Medical Center in 1977. Dr. currently practices at Brownsville Community Development Corporation in Brooklyn, New York. Their National Provider Identifier (NPI) is 1174583686, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.

CMS Medicare data shows Dr. Frederick Greenstein as a lower-volume urology provider, treating approximately 196 Medicare beneficiaries and delivering 379 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.

Under the Physician Payments Sunshine Act, CMS reports that Dr. Frederick Greenstein received $206 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.