NPPES file of Aug 9, 2026

Thomas Harold Jamison, MD

Rheumatology Physician · Martinez, CA

Thomas Harold Jamison, MD is a rheumatology physician with a practice address in Martinez, California, and NPI 1336227404, issued on Nov 2, 2006. Check the license (California G27534, 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
1336227404
Name
Thomas Harold Jamison
Credential
MD
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
G27534 CA
Self-reported in NPPES; status is on the state search
Practice location
200 Muir RD, Martinez, CA 94553
Phone
(925) 372-1000
Enumerated
Nov 2, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
00G275340 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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Also registered at 200 Muir RD

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

  1. Sharon Abrams, MDDiagnostic Radiology Physician1780762856
  2. Elizabeth Aguirre, PHARM.D.Pharmacist1518119833
  3. Mona Ahmad, M.D.Physical Medicine & Rehabilitation Physician1881128510
  4. Eric Alexander, MDNeuromuscular Medicine (Physical Medicine & Rehabilitation) Physician1922180157
  5. Robert Anderson, MDInternal Medicine Physician1447338538
  6. May Antonio, PTPhysical Therapist1245553668

Verify Thomas Harold Jamison in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G27534
    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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Thomas Harold Jamison among 926 rheumatology physician records in California

Thomas Harold Jamison, MD 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 updated2007 · 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.

The 8 rheumatology physician records with the nearest ZIP codes

  1. Michael Lyon, M.D.Livermore, CA 945501255357968
  2. Brittany Goss, D.O.Napa, CA 945581093911356
  3. Rae Bourne, M.D.Orinda, CA 945631356569628
  4. Hisako LeungPleasanton, CA 945661194826354
  5. Naini Sharma, MDFremont, CA 945391659602027
  6. Christine Elias, M.D.Fremont, CA 945381972732600
  7. Peter Hendler, MDFremont, CA 945381659456325
  8. Lukas Lasyone, M.D., MPH&TMDublin, CA 945681922485747

Common questions

What is Thomas Harold Jamison, MD's NPI number?

Thomas Harold Jamison, MD's National Provider Identifier (NPI) is 1336227404, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Harold Jamison, MD located?

The NPPES record lists a practice address at 200 Muir RD, Martinez, CA, 94553. Phone: (925) 372-1000. Providers update this record themselves, so call before visiting.

How can I verify Thomas Harold Jamison, MD's license?

NPPES lists California license number G27534, 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.