Marissa Wat, RN, MSN

With 12 years of practice, Marissa Wat is an established certified registered nurse anesthetist (crna) provider, RN, MSN, after earning their medical degree at Other in 2014. Marissa currently practices across 10 facilities, including University Anesthesia Medical Group in San Francisco, California. Their National Provider Identifier (NPI) is 1023411642, 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 Marissa Wat as a lower-volume certified registered nurse anesthetist (crna) provider, treating approximately 210 Medicare beneficiaries and delivering 214 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 Marissa Wat received $17 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.