Dr. Mark Nishiki, MD

With 20 years of practice, Dr. Mark Nishiki is an established pathology provider, MD, after earning their medical degree at University Of Southern California Keck School Of Medicine in 1980. Dr. currently practices across 8 facilities, including St Joseph's Medical Center Of Stockton in Stockton, California. Their National Provider Identifier (NPI) is 1457385890, 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. Mark Nishiki as a lower-volume pathology provider, treating approximately 444 Medicare beneficiaries and delivering 1K services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.