Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Brian Chang

Individual provider Emergency Medicine Physician · NPI 1164840013

Brian Chang practises Emergency Medicine in San Francisco, California. Graduated from Warren Alpert Medical School of Brown University in 2014, 12 years ago. Practices with Pacific Redwood Medical Group Inc, a 59-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
12
Trained at
Warren Alpert Medical School of Brown University
Licensed in
CA
In the registry since
2014
Specialties on file
2
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Practice location Address checks out

521 Parnassus Ave
San Francisco, CA 94143-2206
Phone: (415) 353-1550
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 141050 (CA)
General Acute Care Hospital Taxonomy 282N00000X

Record details

NPI number1164840013
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedMarch 28, 2014
Last updated in NPPESFebruary 11, 2022

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolWARREN ALPERT MEDICAL SCHOOL OF BROWN UNIVERSITY
Graduated 2014 (12 years in practice)
Group practice Pacific Redwood Medical Group Inc — 59 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients120
Services billed 150 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Pacific Redwood Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 59 clinicians in the practice; 12 are shown here.

Other providers in San Francisco