Dr. John Mascarenhas, MD

With 18 years of practice, Dr. John Mascarenhas is an established hematology provider, MD, after earning their medical degree at New York Medical College in 2002. Dr. currently practices across 9 facilities, including Fpa Hospital Based in New York, New York. Their National Provider Identifier (NPI) is 1376719104, 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.

Dr. John Mascarenhas's practice is located in ZIP 10029 (New York, New York), which has an overall CartoChrome Healthcare Access Score of 86/100 (Excellent Access). Patients in this area have comparatively strong access to primary care, specialists, and hospital services.

CMS Medicare data shows Dr. John Mascarenhas as a lower-volume hematology provider, treating approximately 171 Medicare beneficiaries and delivering 603 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. John Mascarenhas received $102K in industry payments in 2023. Payments at this scale are elevated relative to most providers and may warrant direct inquiry about potential conflicts of interest during your visit.