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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JOHN H. FISHER M.D.
NPI 1639179799
Internal Medicine - Gastroenterology in Daly City, CA

Active since July 29, 2005
1850 SULLIVAN AVENUE #520, DALY CITY, CA 94015(650) 756-5000(650) 756-5903 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About John H. Fisher M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN H. FISHER M.D. (NPI 1639179799) is an individual gastroenterology provider in Daly City, California, licensed in California (G25678) and active in the NPI registry since July 2005.

NPPES Registry Identity

NPI1639179799
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameJOHN H. FISHERCredential: M.D.
Location Address1850 SULLIVAN AVENUE #520Daly City, CA 94015
Mailing Address1850 Sullivan Avenue #520Daly City, CA 94015 · (650) 756-5000 · Fax (650) 756-5903
Phone(650) 756-5000
Fax(650) 756-5903
Sole ProprietorNo
Enumeration DateJuly 29, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1639179799 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · G25678
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Other Identifiers 1

MedicaidGR0092050CA

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARK M. TSUCHIYOSE M.D.
Internal Medicine (Gastroenterology)
1850 SULLIVAN AVENUE #520
DALY CITY, CA 94015
San Mateo County (650) 756-5000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Fisher's NPI number?

The NPI number for John Fisher is 1639179799. It was assigned to this individual provider in the NPPES registry on July 29, 2005.

Where is John Fisher located?

John Fisher practices at 1850 Sullivan Avenue #520, Daly City, CA 94015. The listed phone number is (650) 756-5000.

What is John Fisher's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for John Fisher was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.