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

Gregory Fung, MD

Individual provider Internal Medicine Physician · NPI 1700970795

Gregory Fung, MD is an Internal Medicine in San Francisco, California. Graduated from University of California, San Francisco School of Medicine in 1978, 48 years ago. Practices with San Francisco Digestive Disease Medical Group Inc a Prof Corp, a 3-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
48
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.

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Practice location Address checks out

789 Vallejo St
San Francisco, CA 94133-3834
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)
Internal Medicine Physician Taxonomy 207R00000X · Licence G41709 (CA)

Record details

NPI number1700970795
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 3, 2006
Last updated in NPPESDecember 11, 2008

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesGASTROENTEROLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 1978 (48 years in practice)
Group practice San Francisco Digestive Disease Medical Group Inc A Prof Corp — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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