NPPES file of Aug 9, 2026

Wesley Chan, M.D.

Preventive Medicine/Occupational Environmental Medicine Physician · Walnut Creek, CA

Wesley Chan, M.D. is a preventive medicine/occupational environmental medicine physician with a practice address in Walnut Creek, California, and NPI 1740214899, issued on Jul 11, 2006. Check the license (California G77368, 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
1740214899
Name
Wesley Chan
Credential
M.D.
Primary taxonomy
Preventive Medicine/Occupational Environmental Medicine Physician 2083P0500X
License number
G77368 CA
Self-reported in NPPES; status is on the state search
Practice location
1981 N Broadway, Walnut Creek, CA 94596
Phone
(925) 932-7715
Enumerated
Jul 11, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(925) 932-0603
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 preventive medicine/occupational environmental medicine physician records → All 129 in California → Look up another NPI →

Also registered at 1981 N Broadway

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

  1. Renee Choi, N.D.Naturopath1679981161
  2. Kelly Han, N.D.Naturopath1598090573
  3. Sandra Ja'Chim, FNPFamily Nurse Practitioner1164757522
  4. Paula Jeha, NURSE PRACTITIONERNurse Practitioner1629413612
  5. Touraj Khalilzadeh, DMD, MDOral and Maxillofacial Surgery (Dentist)1578606844
  6. Conrad Lai, M.DEmergency Medicine Physician1942248141

Verify Wesley 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 G77368    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Wesley Chan among 129 preventive medicine/occupational environmental medicine physician records in California

Wesley Chan, M.D. is one of 129 preventive medicine/occupational environmental medicine physician records with a practice address in California. 32% 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 3% of them.

  • NPI issued2006 · 3% of these records are older, 67% newer
  • In a Medicare fileNo · 32% of these records are
  • In the CMS Doctors and Clinicians fileNo · 11% of these records are
  • Record last updated2007 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083P0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Preventive Medicine/Occupational Environmental Medicine Physician providers in California

There are 129 preventive medicine/occupational environmental medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 129 in California → Every provider in Walnut Creek → Preventive Medicine/Occupational Environmental Medicine Physician nationwide →

The 8 preventive medicine/occupational environmental medicine physician records with the nearest ZIP codes

  1. Michael Fischman, M.D.Walnut Creek, CA 945961659447027
  2. Stephen Frangos, MDSan Ramon, CA 945831962986596
  3. Janice Prudhomme, D.O.Oakland, CA 946091548313331
  4. Meredith Saunders, M.D.Oakland, CA 946211922016302
  5. Peter Lichty, MD MOHBenicia, CA 945101548480122
  6. Joseph Chen, MDAlameda, CA 945011952388464
  7. Robert WagnerBerkeley, CA 947101558499079
  8. Diane Liu, M.D., M.P.H.Berkeley, CA 947201952459240

Common questions

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

Wesley Chan, M.D.'s National Provider Identifier (NPI) is 1740214899, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Wesley Chan, M.D. located?

The NPPES record lists a practice address at 1981 N Broadway, Walnut Creek, CA, 94596. Phone: (925) 932-7715. Providers update this record themselves, so call before visiting.

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

NPPES lists California license number G77368, 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.