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

Chih Yao Chang, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1730820739

Chih Yao Chang, MD is a Hospitalist in San Francisco, California. Qualified in 2019, 7 years ago. Practices with Regents of the University of California, a 717-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Licensed in
CA
In the registry since
2022
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

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

San Francisco, CA
Fax: (415) 750-5594

No coordinates on file. Search this address in Google Maps

Additional practice locations (1)

  • St. Mary'S Medical Center, San Francisco, CA 94117 — (415) 750-5942

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A199655 (CA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (CA)

Record details

NPI number1730820739
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 5, 2022
Last updated in NPPESMay 15, 2025
Certification dateMay 15, 2025

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
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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