Registry data as of Aug 27, 2026

Thomas Artzner, MD

Emergency Medicine Physician · Gridley, CA

Thomas Artzner, MD is an emergency medicine physician with a practice address in Gridley, California, and NPI 1396779732, issued on Jul 10, 2006. Check the license (California G25670, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1396779732
Name
Thomas Artzner
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
G25670 CA
Self-reported in NPPES; status is on the state search
Practice location
240 Spruce St, Gridley, CA 95948
Phone
(530) 846-5671
Enumerated
Jul 10, 2006
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 240 Spruce St

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

  1. Daniel Alvarado, FNPCritical Care Medicine Nurse Practitioner1336921931
  2. Addison Dwyer, PTAPhysical Therapy Assistant1700522125
  3. Mary FalconerPhysical Therapy Assistant1710492970
  4. Jennifer GriningGeriatric Physical Therapist1679926232
  5. George Hayes, MDOrthopaedic Surgery Physician1912902677
  6. Samantha King, PTAPhysical Therapy Assistant1770002826

Verify Thomas Artzner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G25670
    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.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

90% fewer Medicare Part D claims than the average emergency medicine physician in 2024

37 Medicare Part D claims, against an average of 355 among the 49,029 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Thomas Artzner37
  2. Specialty average355

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

2 emergency medicine physician records list a Gridley practice address

They are 2 of the 132 NPPES records with a Gridley practice address, and 7,133 emergency medicine physician records in California.

Other emergency medicine physician records in California

  1. Cooper Aakhus, MDStanford, CA1194351007
  2. Pyra Aarden, MDMartinez, CA1417058199
  3. Neal Aaron, D.O.Encinitas, CA1114283520
  4. Eric AaserudeWalnut Creek, CA1811491194
  5. Nader Abas, MDBarstow, CA1346288305
  6. Michael Abbo, MDNovato, CA1205819042
  7. Daniel Abbott, MDFullerton, CA1518907864
  8. Paul-Andre Abboud, M.D.Oakland, CA1710065503
  9. Mostafa Abdel-Hamid, MDStanford, CA1457918740
  10. Ashraf Abdel-KerimChino, CA1396961538

Common questions

What is Thomas Artzner, MD's NPI number?

Thomas Artzner, MD's National Provider Identifier (NPI) is 1396779732, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Artzner, MD located?

The NPPES record lists a practice address at 240 Spruce St, Gridley, CA, 95948. Phone: (530) 846-5671. Providers update this record themselves, so call before visiting.

How can I verify Thomas Artzner, MD's license?

NPPES lists California license number G25670, 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.

How much does Thomas Artzner, MD prescribe under Medicare Part D?

In 2024, Thomas Artzner, MD had 37 Medicare Part D claims; the average among emergency medicine physician prescribers was 355. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.