NPPES file of Aug 9, 2026

John Williamson, MD

Surgery Physician · Camp Pendleton, CA

John Williamson, MD is a surgery physician with a practice address in Camp Pendleton, California, and NPI 1790206092, issued on Jun 28, 2017. Check the license (California A203387, 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
1790206092
Name
John Williamson
Credential
MD
Primary taxonomy
Surgery Physician 208600000X
License numbers
A203387 CA
MD467935 PA
Self-reported in NPPES; status is on the state search
Practice location
200 Mercy Cirle, Camp Pendleton, CA 92055
Phone
(760) 725-1288
Enumerated
Jun 28, 2017
Record last updated
Jul 24, 2025
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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Verify John Williamson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A203387
    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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16 surgery physician records list a practice address in Camp Pendleton

They are 16 of the 695 NPPES records with a practice address in Camp Pendleton, and 3,118 surgery physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other surgery physician records in California

  1. Miriam Abaunza, M.D.Los Angeles, CA1538470778
  2. Hana Abdirahman, MDTemecula, CA1265288112
  3. Sherwin Abdoli, MDPetaluma, CA1508386442
  4. Mhdshafic Abdulkarim, MDOrange, CA1750174249
  5. Sarah Abdulla, M.D.Baldwin Park, CA1699200840
  6. Shoko Abe, M.D.Berkeley, CA1609178136
  7. Stuart Abel, M.D.Los Angeles, CA1750761516
  8. Elliot Abemayor, MDLos Angeles, CA1972527414
  9. Marc Abi Karam, MD, MSPalo Alto, CA1437846508
  10. Ali Abidali, DOGlendora, CA1861888794

Common questions

What is John Williamson, MD's NPI number?

John Williamson, MD's National Provider Identifier (NPI) is 1790206092, issued on Jun 28, 2017. An NPI identifies a provider in billing; it is not a license.

Where is John Williamson, MD located?

The NPPES record lists a practice address at 200 Mercy Cirle, Camp Pendleton, CA, 92055. Phone: (760) 725-1288. Providers update this record themselves, so call before visiting.

How can I verify John Williamson, MD's license?

NPPES lists California license number A203387, 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.