Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. John Edward Mendelson, MD

Individual provider Internal Medicine Physician · NPI 1891889341

Dr. John Edward Mendelson, MD is an Internal Medicine in San Francisco, California. Graduated from University of California, San Francisco School of Medicine in 1982, 44 years ago. Practices with Ria Health PC, a 16-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
44
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

909 Hyde St 210
San Francisco, CA 94109-4822
Phone: (415) 474-7900
Fax: (415) 474-7930
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G49959 (CA)
Addiction Medicine (Internal Medicine) Physician Taxonomy 207RA0401X · Licence G49959 (CA)

Record details

NPI number1891889341
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 2, 2006
Last updated in NPPESFebruary 5, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesADDICTION MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 1982 (44 years in practice)
Group practice Ria Health Pc — 16 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in San Francisco