NPPES file of Aug 9, 2026

Matthew Chan, MD

Preventive Medicine/Occupational Environmental Medicine Physician · Loma Linda, CA

Matthew Chan, MD is a preventive medicine/occupational environmental medicine physician with a practice address in Loma Linda, California, and NPI 1699927178, issued on Oct 16, 2008. Check the license (California A105924, 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
1699927178
Name
Matthew Chan
Credential
MD
Primary taxonomy
Preventive Medicine/Occupational Environmental Medicine Physician 2083P0500X
License number
A105924 CA
Self-reported in NPPES; status is on the state search
Practice location
25455 Barton Road, Loma Linda, CA 92354
Phone
(909) 558-4000
Enumerated
Oct 16, 2008
Record last updated
Oct 14, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(909) 558-6221
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 25455 Barton Road

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

  1. Karen Gaio Hansberger, MDObstetrics & Gynecology Physician1710083159
  2. Laurel Munson, MDObstetrics & Gynecology Physician1982700324

Verify Matthew 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 A105924    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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Matthew Chan among 129 preventive medicine/occupational environmental medicine physician records in California

Matthew Chan, MD 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 2008, is newer than 63% of them.

  • NPI issued2008 · 63% of these records are older, 31% newer
  • In a Medicare fileNo · 32% of these records are
  • In the CMS Doctors and Clinicians fileNo · 11% of these records are
  • Record last updated2010 · 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 Loma Linda → Preventive Medicine/Occupational Environmental Medicine Physician nationwide →

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

  1. Walter Maier, MD,MPHLake Arrowhead, CA 923521235175233
  2. Allison Depas, MDLoma Linda, CA 923501720780687
  3. Enrico Melson, MDFontana, CA 923351770772071
  4. Sanjiwani Meharda, MDGrand Terrace, CA 923131104108109
  5. Thomas Mogensen, M.D.Yucaipa, CA 923991578865671
  6. Charity Underwood Eshleman, MDSan Bernardino, CA 924081477298735
  7. Robert Petrie, MDLa Quinta, CA 922531619138450
  8. Margaret Ryan, MD, MPHSan Diego, CA 921861619977618

Common questions

What is Matthew Chan, MD's NPI number?

Matthew Chan, MD's National Provider Identifier (NPI) is 1699927178, issued on Oct 16, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Chan, MD located?

The NPPES record lists a practice address at 25455 Barton Road, Loma Linda, CA, 92354. Phone: (909) 558-4000. Providers update this record themselves, so call before visiting.

How can I verify Matthew Chan, MD's license?

NPPES lists California license number A105924, 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.