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

Gregory Fung MD Inc

Organization Gastroenterology Physician · NPI 1275673790

Gregory Fung MD Inc provides Gastroenterology Physician services in San Francisco, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

789 Vallejo St
San Francisco, CA 94133-3834 Not confirmed with CMS for 12 years — call before visiting
Phone: (415) 982-6691
Fax: (415) 982-0914
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence G41709 (CA)

Record details

NPI number1275673790
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Gregory Fung — President · (415) 982-6691
NPI enumeratedFebruary 7, 2007
Last updated in NPPESJune 23, 2014
Mailing address789 Vallejo Street, San Francisco, CA 94133-3834

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