NPPES file of Aug 9, 2026

Jon W. Propst, MD

Anesthesiology Physician · Santa Maria, CA

Jon W. Propst, MD is an anesthesiology physician with a practice address in Santa Maria, California, and NPI 1427044494, issued on Sep 23, 2005. Check the license (California G66978, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427044494
Name
Jon W. Propst
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
G66978 CA
Self-reported in NPPES; status is on the state search
Practice location
1400 E Church St, Santa Maria, CA 93454
Phone
(805) 739-3700
Enumerated
Sep 23, 2005
Record last updated
Jul 20, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(805) 739-3060
Medicaid ID
00G669780 CA
Medicare enrollment
Enrolled (PECOS I20100325000431); accepts Medicare assignment
Medical or professional school
University Of Miami, Lm Miller School Of Medicine, 1988
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1400 E Church St

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

  1. Elena Agafonova, M.D.Internal Medicine Physician1558757666
  2. Alyse Andrade, RN IBCLCLactation Consultant (Registered Nurse)1104647403
  3. Steven Andrews, PAPhysician Assistant1083352397
  4. Andrea ArthoferStudent in an Organized Health Care Education/Training Program1225772973
  5. Hannah Barrows, PA-CPhysician Assistant1528747128
  6. Nader Batal, DOFamily Medicine Physician1740923135

Verify Jon W. Propst in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G66978
    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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Bills Medicare through one group practice

  1. Anesthesia Medical Group OF Santa Maria IncSanta Maria, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jon W. Propst among 7,571 anesthesiology physician records in California

Jon W. Propst, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 95% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1988 · median 2006 among the 4,868 with a school on file
  • Record last updated2020 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in California

There are 7,571 anesthesiology physician records in California.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Donald Alderman, MDSanta Maria, CA 934541972547875
  2. Jia-Yi Bian, D.O.Santa Maria, CA 934541104003516
  3. Theodore Burdumy, MDSanta Maria, CA 934541679569891
  4. Johnny Chen, M.D.Santa Maria, CA 934541225286479
  5. Daniel Cosca, MDSanta Maria, CA 934541225024433
  6. Erika Gibson, M.D.Santa Maria, CA 934541871723320
  7. Kaigo Hwang, M.D.Santa Maria, CA 934541982690962
  8. James Justice, MDSanta Maria, CA 934541194711176

Common questions

What is Jon W. Propst, MD's NPI number?

Jon W. Propst, MD's National Provider Identifier (NPI) is 1427044494, issued on Sep 23, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Jon W. Propst, MD located?

The NPPES record lists a practice address at 1400 E Church St, Santa Maria, CA, 93454. Phone: (805) 739-3700. Providers update this record themselves, so call before visiting.

How can I verify Jon W. Propst, MD's license?

NPPES lists California license number G66978, 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. Medicare files from data.cms.gov. 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.