NPPES file of Aug 9, 2026

William Mark Thomas, D.C.

Chiropractor · La Mirada, CA

William Mark Thomas, D.C. is a chiropractor with a practice address in La Mirada, California, and NPI 1609873082, issued on Jun 30, 2005. Check the license (California DC24637, as entered in NPPES) with the California board that licenses this profession; 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
1609873082
Name
William Mark Thomas
Credential
D.C.
Primary taxonomy
Chiropractor 111N00000X
License number
DC24637 CA
Self-reported in NPPES; status is on the state search
Practice location
15763 Imperial Hwy, La Mirada, CA 90638
Phone
(562) 943-4132
Enumerated
Jun 30, 2005
Record last updated
Mar 10, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(562) 304-2917
Medicare enrollment
Enrolled (PECOS I20080617000624); accepts Medicare assignment
Medical or professional school
Los Angeles College Of Chiropractic, 1995
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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Verify William Mark Thomas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license DC24637
    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
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William Mark Thomas among 11,498 chiropractor records in California

William Mark Thomas, D.C. is one of 11,498 chiropractor records with a practice address in California. 7% 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 97% newer
  • In a Medicare fileNo · 7% of these records are
  • In the CMS Doctors and Clinicians fileYes · 25% of these records are
  • Graduated1995 · median 1999 among the 2,907 with a school on file
  • Record last updated2008 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

15 chiropractor records list a practice address in La Mirada

They are 15 of the 427 NPPES records with a practice address in La Mirada, and 11,498 chiropractor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 chiropractor records with the nearest ZIP codes

  1. Robert Andrade, D.C.La Mirada, CA 906381902037864
  2. Richelle Mae Bulda, DCLa Mirada, CA 906381801601075
  3. Soheila Ghaziaskar, D.C.La Mirada, CA 906381588813117
  4. Donald Goodwin, DCLa Mirada, CA 906381356565451
  5. Aaron Hamilton, D.C.La Mirada, CA 906381942339379
  6. Michael Martin, DCLa Mirada, CA 906381386920858
  7. Gregory Middleton, D.C.La Mirada, CA 906381033256144
  8. Barry O'Connor, D.C.La Mirada, CA 906381013105832

Common questions

What is William Mark Thomas, D.C.'s NPI number?

William Mark Thomas, D.C.'s National Provider Identifier (NPI) is 1609873082, issued on Jun 30, 2005. An NPI identifies a provider in billing; it is not a license.

Where is William Mark Thomas, D.C. located?

The NPPES record lists a practice address at 15763 Imperial Hwy, La Mirada, CA, 90638. Phone: (562) 943-4132. Providers update this record themselves, so call before visiting.

How can I verify William Mark Thomas, D.C.'s license?

NPPES lists California license number DC24637, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

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.