Search › California › Internal Medicine Physician
Ryan Mcmahan, MD, MAS
NPI 1356978308 · on the registry since 2020 · sole proprietor
Practice
- Address
- 2425 Geary Blvd
San Francisco, CA 94115 - Phone
- (415) 833-2000
- Organisation at this address
- Kaiser
Kaiser Permanente
Kaiser Permanente
Kaiser Foundation Hospitals
Kaiser Foundation HospitalsInferred from a shared address, not stated in the registry. - Clinicians at this address
- 403
Additional practice sites
- 1001 Potrero Ave, San Francisco, CA
Registry record
- Primary taxonomy
- Internal Medicine Physician
207R00000X
- Also registered as
- Student in an Organized Health Care Education/Training Program
- Licence states on file
- CA
From the registry's licence fields, which are often incomplete.
- Sex
- Male
- Record last updated
- 2025-10-06
Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in California