Dr. Ythanh Nguyen, MD

With 20 years of practice, Dr. Ythanh Nguyen is an established internal medicine provider, MD, after earning their medical degree at Other in 2002. Dr. currently practices across 2 facilities, including in Upland, California. Their National Provider Identifier (NPI) is 1255391181, 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. Ythanh Nguyen's practice is located in ZIP 91730 (Upland, California), which has an overall CartoChrome Healthcare Access Score of 27/100 (Limited Access). Access constraints in this ZIP code can affect wait times, specialist availability, and emergency response — context worth knowing when choosing a provider.

CMS Medicare data shows Dr. Ythanh Nguyen as a lower-volume internal medicine provider, treating approximately 135 Medicare beneficiaries and delivering 573 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. Ythanh Nguyen received $167 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.