Dr. Michael Duffin, M.D.

With 20 years of practice, Dr. Michael Duffin is an established rheumatology provider, M.D., after earning their medical degree at Other in 1986. Dr. currently practices across 2 facilities, including Providence Little Company Of Mary Med Ctr Torrance in Torrance, California. Their National Provider Identifier (NPI) is 1578587309, 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. Michael Duffin as a lower-volume rheumatology provider, treating approximately 426 Medicare beneficiaries and delivering 927 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. Michael Duffin received $150 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.