NPPES file of Aug 9, 2026

Pei Chen, MD

Geriatric Medicine (Internal Medicine) Physician · San Francisco, CA

Pei Chen, MD is a geriatric medicine (internal medicine) physician with a practice address in San Francisco, California, and NPI 1295054948, issued on May 20, 2010. Check the license (California A135701, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1295054948
Name
Pei Chen
Credential
MD
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License numbers
A135701 CA
269237 NY
Self-reported in NPPES; status is on the state search
Practice location
3575 Geary Blvd, San Francisco, CA 94118
Phone
(415) 353-4900
Enumerated
May 20, 2010
Record last updated
Jul 3, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(415) 353-8101
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 3575 Geary Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Adrienne Gordon, LCSWSocial Worker1487062675
  2. Karen HoNurse Practitioner1699325175
  3. Daniel Lin, OTR/LOccupational Therapist1710343470
  4. Robin Pfister, OTR/LOccupational Therapist1962163667
  5. Daniel Pound, M.D.Family Medicine Physician1437105889
  6. Tania Ragaza, MS CCC-SLPSpeech-Language Pathologist1669002275

Verify Pei Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A135701
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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Geriatric Medicine (Internal Medicine) Physician providers in California

There are 532 geriatric medicine (internal medicine) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other geriatric medicine (internal medicine) physician records in California

  1. Adil Abbasi, M.D.La Jolla, CA1548261316
  2. Shashidar Acharya, M.D.Orange, CA1770685521
  3. Marie AdachiLos Angeles, CA1629496740
  4. Pouya Afshar, M.D.San Diego, CA1184958977
  5. Parag Agnihotri, M.D.San Diego, CA1447351085
  6. Andreas Ahlas, M.D.Bakersfield, CA1326200833
  7. Waseem Ahmed, MDSanta Rosa, CA1386803559
  8. Paul AisenSan Diego, CA1669470753
  9. Mahmuda Alam, M.D.Glendale, CA1568659985
  10. Cathy Alessi, M.D.North Hills, CA1134224983

Common questions

What is Pei Chen, MD's NPI number?

Pei Chen, MD's National Provider Identifier (NPI) is 1295054948, issued on May 20, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Pei Chen, MD located?

The NPPES record lists a practice address at 3575 Geary Blvd, San Francisco, CA, 94118. Phone: (415) 353-4900. Providers update this record themselves, so call before visiting.

How can I verify Pei Chen, MD's license?

NPPES lists California license number A135701, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.