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

Rheumatology

Ann M. Belek, MD

Sees patients in San Francisco, CA · Stockton, CA · Vallejo, CA · California

Summary

Ann M. Belek, MD (Rheumatology) is enrolled with Medicare at 4 practice locations in San Francisco, CA, Stockton, CA and Vallejo, CA. NPI 1780841197. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Ann M. Belek, 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

RheumatologyPrimary specialty
YesAccepts Medicare assignment
20Years since medical school (graduated 2006)
University Of Kentucky College Of MedicineMedical school
FemaleGender (as listed)
Permanente Medical Group IncGroup practice

Quick answers

Where does Ann M. Belek see patients?
Medicare's clinician data lists 4 practice locations, including San Francisco, CA, Stockton, CA and Vallejo, CA. Call before your visit to confirm the address.
What is Ann M. Belek's specialty?
Medicare lists Rheumatology as the primary specialty.
Does Ann M. Belek accept Medicare assignment?
Yes. Medicare's clinician data says Ann M. Belek 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 Ann M. Belek?
(415) 833-2000, as listed in official Medicare / NPI Registry data.
What is Ann M. Belek's NPI number?
1780841197. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Ann M. Belek is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Ann M. Belek as a member of this group (CMS data updated 2026-10-02).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Rheumatology doctors in California →

Other rheumatologists in San Francisco

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

All rheumatologists in San Francisco →

Clinician information

CredentialMD
Medical schoolUniversity Of Kentucky College Of Medicine
Graduation year2006
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1780841197
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians