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Internal Medicine

Anne W. Chang, MD

Works at hospitals in Greenbrae, CA · San Francisco, CA · California

Summary

Anne W. Chang, MD (Internal Medicine) is listed by Medicare at 2 hospitals in Greenbrae, CA and San Francisco, CA. NPI 1356378111. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Anne W. Chang, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
36Years since medical school (graduated 1990)
University Of Texas Medical School At HoustonMedical school
FemaleGender (as listed)
University of California San FranciscoGroup practice (+1 more)

Quick answers

Which hospitals does Anne W. Chang work at?
Medicare's official clinician data lists Anne W. Chang at 2 hospitals: Marinhealth Medical Center and UCSF Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Anne W. Chang see patients?
Medicare's clinician data lists 5 practice locations, including San Francisco, CA. Call before your visit to confirm the address.
What is Anne W. Chang's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Anne W. Chang accept Medicare assignment?
Yes. Medicare's clinician data says Anne W. Chang accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Anne W. Chang offer telehealth?
Medicare's clinician data says Anne W. Chang offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Anne W. Chang?
(415) 476-4029, as listed in official Medicare / NPI Registry data.
What is Anne W. Chang's NPI number?
1356378111. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Anne W. Chang works

Medicare's Facility Affiliation Data lists Anne W. Chang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Anne W. Chang is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Anne W. Chang as a member of these groups (CMS data updated 2026-10-02).

  • University of California San Francisco1,839 clinicians in the group
  • UCSF Medical Group Business Services1,598 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Francisco

Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.

All internal medicine doctors in San Francisco →

Clinician information

CredentialMD
Medical schoolUniversity Of Texas Medical School At Houston
Graduation year1990
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1356378111
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians