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

Dr. Theodore An Peng, MD

Individual provider Internal Medicine Physician · NPI 1548722754

Dr. Theodore An Peng, MD is a Hospitalist in San Francisco, California. Graduated from University of California, San Francisco School of Medicine in 2019, 7 years ago. Practices with Regents of the University of California, a 717-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA
In the registry since
2019
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

505 Parnassus Ave
San Francisco, CA 94143-2204
Phone: (415) 476-1000
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Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A178392 (CA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1548722754
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 5, 2019
Last updated in NPPESAugust 15, 2022
Certification dateAugust 13, 2022

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2019 (7 years in practice)
Group practice Regents Of The University Of California — 717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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