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

Nephrology

Sarah Woon, MD

Works at hospitals in San Rafael, CA · Santa Rosa, CA · California

Summary

Sarah Woon, MD (Nephrology) is listed by Medicare at 2 hospitals in San Rafael, CA and Santa Rosa, CA. NPI 1629094560. 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 Sarah Woon, 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

NephrologyPrimary specialty
YesAccepts Medicare assignment
23Years since medical school (graduated 2003)
Wayne State University School Of MedicineMedical school
FemaleGender (as listed)
Permanente Medical Group IncGroup practice

Quick answers

Which hospitals does Sarah Woon work at?
Medicare's official clinician data lists Sarah Woon at 2 hospitals: Kaiser Foundation Hospital and Kaiser Foundation Hospital-Santa Rosa. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Sarah Woon see patients?
Medicare's clinician data lists 1 practice location in Novato, CA. Call before your visit to confirm the address.
What is Sarah Woon's specialty?
Medicare lists Nephrology as the primary specialty.
Does Sarah Woon accept Medicare assignment?
Yes. Medicare's clinician data says Sarah Woon 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 Sarah Woon?
(415) 899-7525, as listed in official Medicare / NPI Registry data.
What is Sarah Woon's NPI number?
1629094560. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Sarah Woon works

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

Group practices

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

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Nephrology doctors in California →

Other nephrologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All nephrologists in California →

Clinician information

CredentialMD
Medical schoolWayne State University School Of Medicine
Graduation year2003
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1629094560
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