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

John Mendelson MD

Organization Internal Medicine Physician · NPI 1245418912

John Mendelson MD is an Internal Medicine Physician in San Francisco, California. Licensed in California. Registered with an NPI since 2008.

Licensed in
CA
In the registry since
2008

Practice location Address checks out

909 Hyde St #210
San Francisco, CA 94109-4822
Phone: (415) 474-7900
Fax: (415) 474-7930
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

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

Record details

NPI number1245418912
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official John Mendelson — Owner/ Physician · (415) 474-7900
NPI enumeratedFebruary 5, 2008
Last updated in NPPESFebruary 5, 2008
Mailing address909 Hyde St, 210, San Francisco, CA 94109-4822

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