Dr. Joanna Jen, MD

With 20 years of practice, Dr. Joanna Jen is an established nephrology provider, MD, after earning their medical degree at Yale University School Of Medicine in 1992. Dr. currently practices at Uc Regents in Los Angeles, California. Their National Provider Identifier (NPI) is 1407879216, 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. Joanna Jen as a lower-volume nephrology provider, treating approximately 171 Medicare beneficiaries and delivering 446 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.