NPPES file of Aug 9, 2026

Michael Mendel Ashnin, M.D.

Anesthesiology Physician · Lompoc, CA

Michael Mendel Ashnin, M.D. is an anesthesiology physician with a practice address in Lompoc, California, and NPI 1497800569, issued on Jan 25, 2007. Check the license (California A55508, 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
1497800569
Name
Michael Mendel Ashnin
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
A55508 CA
Self-reported in NPPES; status is on the state search
Practice location
508 E Hickory Ave, Lompoc, CA 93436
Phone
(805) 737-3300
Enumerated
Jan 25, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(805) 737-3300
Medicaid ID
GR0058550 CA
Medicare enrollment
Enrolled (PECOS I20090115000184); accepts Medicare assignment
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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8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →

Also registered at 508 E Hickory Ave

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

  1. Cedric Kwon, M.D.Anesthesiology Physician1700931896
  2. Daniel Moghadam, MDEmergency Medicine Physician1144553272
  3. David Tufenkian, MDEmergency Medicine Physician1477507879

Verify Michael Mendel Ashnin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A55508    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. Lompoc Valley Anesthesia AssociatesLompoc, CA

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

Michael Mendel Ashnin among 7,571 anesthesiology physician records in California

Michael Mendel Ashnin, M.D. 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 2007, is newer than 47% of them.

  • NPI issued2007 · 47% of these records are older, 43% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1985 · median 2006 among the 4,868 with a school on file
  • Record last updated2007 · 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.

All 7,571 in California → Every provider in Lompoc → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Cedric Kwon, M.D.Lompoc, CA 934361700931896
  2. Ricki Barnett, M.D.Paso Robles, CA 934461740499268
  3. Daniel Cramer, M.D.Pismo Beach, CA 934491316478415
  4. Stephen Giacomazzi, MDPismo Beach, CA 934491699301556
  5. Nolan Higa, M.D.Arroyo Grande, CA 934201407842792
  6. Louis NitsosArroyo Grande, CA 934201043392475
  7. Ronald Smith-Arizmendi, M.D.Arroyo Grande, CA 934201295721280
  8. Andrew Sun, M.D.Arroyo Grande, CA 934201487640470

Common questions

What is Michael Mendel Ashnin, M.D.'s NPI number?

Michael Mendel Ashnin, M.D.'s National Provider Identifier (NPI) is 1497800569, issued on Jan 25, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Michael Mendel Ashnin, M.D. located?

The NPPES record lists a practice address at 508 E Hickory Ave, Lompoc, CA, 93436. Phone: (805) 737-3300. Providers update this record themselves, so call before visiting.

How can I verify Michael Mendel Ashnin, M.D.'s license?

NPPES lists California license number A55508, 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.

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.