Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Sally Chau, MD

Works at hospitals in Oakland, CA · Hayward, CA · Fremont, CA · California

Summary

Sally Chau, MD (Internal Medicine) is listed by Medicare at 3 hospitals in Oakland, CA, Hayward, CA and Fremont, CA. NPI 1154959401. 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 Sally Chau, 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
6Years since medical school (graduated 2020)
Pennsylvania State University College Of MedicineMedical school
FemaleGender (as listed)
West Coast KidneyGroup practice

Quick answers

Which hospitals does Sally Chau work at?
Medicare's official clinician data lists Sally Chau at 3 hospitals: Highland Hospital, St Rose Hospital and Washington Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Sally Chau see patients?
Medicare's clinician data lists 2 practice locations, including Fremont, CA and Hayward, CA. Call before your visit to confirm the address.
What is Sally Chau's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Sally Chau accept Medicare assignment?
Yes. Medicare's clinician data says Sally Chau 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.
What is the phone number for Sally Chau?
(510) 745-8187, as listed in official Medicare / NPI Registry data.
What is Sally Chau's NPI number?
1154959401. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Sally Chau works

Medicare's Facility Affiliation Data lists Sally Chau 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 Sally Chau is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Sally Chau as a member of this group (CMS data updated 2026-10-02).

  • West Coast Kidney56 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Fremont

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

All internal medicine doctors in Fremont →

Clinician information

CredentialMD
Medical schoolPennsylvania State University College Of Medicine
Graduation year2020
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1154959401
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