NPPES file of Aug 9, 2026

Andrew C. Chan, M.D.

Rheumatology Physician · San Francisco, CA

Andrew C. Chan, M.D. is a rheumatology physician with a practice address in San Francisco, California, and NPI 1578667028, issued on Sep 12, 2006. Check the license (California G66641, 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
1578667028
Name
Andrew C. Chan
Credential
M.D.
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
G66641 CA
Self-reported in NPPES; status is on the state search
Practice location
400 Parnassus Ave FL 5, San Francisco, CA 94143
Phone
(415) 353-2497
Enumerated
Sep 12, 2006
Record last updated
Sep 11, 2025
Fax
(415) 353-2530
Medicaid ID
00G666410 CA
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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8 nearest rheumatology physician records → All 926 in California → Look up another NPI →

Also registered at 400 Parnassus Ave FL 5

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

  1. Christopher Cheung, M.D.Cardiovascular Disease Physician1669094074
  2. Tony Chou, M.D.Cardiovascular Disease Physician1457389009
  3. Alison Dedent, MDPulmonary Disease Physician1649699661
  4. Roger Espiritu, M.D.Allergy & Immunology Physician1336235365
  5. Erin Flatley, RN, AGNP-BCAdult Health Nurse Practitioner1932537172
  6. David Gardner, M.D.Internal Medicine Physician1437268323

Verify Andrew C. Chan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G66641    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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Andrew C. Chan among 926 rheumatology physician records in California

Andrew C. Chan, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 55% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2025 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Rheumatology Physician providers in California

There are 926 rheumatology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 926 in California → Every provider in San Francisco → Rheumatology Physician nationwide →

The 8 rheumatology physician records with the nearest ZIP codes

  1. Urmila Bajpai, M.D.San Francisco, CA 941431790932457
  2. Ann Mary Belek, MDSan Francisco, CA 941431780841197
  3. Sharon Chung, MDSan Francisco, CA 941431649393737
  4. Lindsey Criswell, MDSan Francisco, CA 941431881659290
  5. John Davis, MD, MPHSan Francisco, CA 941431912962705
  6. Lianne Gensler, M.D.San Francisco, CA 941431780781369
  7. Edward Goetzl, MDSan Francisco, CA 941431255396594
  8. Andrew Gross, M.D.San Francisco, CA 941431174555981

Common questions

What is Andrew C. Chan, M.D.'s NPI number?

Andrew C. Chan, M.D.'s National Provider Identifier (NPI) is 1578667028, issued on Sep 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Andrew C. Chan, M.D. located?

The NPPES record lists a practice address at 400 Parnassus Ave FL 5, San Francisco, CA, 94143. Phone: (415) 353-2497. Providers update this record themselves, so call before visiting.

How can I verify Andrew C. Chan, M.D.'s license?

NPPES lists California license number G66641, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.