Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. William Mark Thomas, DC

Individual provider Chiropractor · NPI 1609873082

Dr. William Mark Thomas, DC is registered under Chiropractic in LA Mirada, California. Graduated from Los Angeles College of Chiropractic in 1995, 31 years ago. Accepts Medicare assignment. Licensed in California.

Years since qualifying
31
Trained at
Los Angeles College of Chiropractic
Licensed in
CA
In the registry since
2005
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

15763 Imperial Hwy
LA Mirada, CA 90638-2510 Not confirmed with CMS for 18 years — call before visiting
Phone: (562) 943-4132
Fax: (562) 304-2917
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence DC24637 (CA)

Record details

NPI number1609873082
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorNo
NPI enumeratedJune 30, 2005
Last updated in NPPESMarch 10, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCHIROPRACTIC
Medical schoolLOS ANGELES COLLEGE OF CHIROPRACTIC
Graduated 1995 (31 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients42
Services billed 331 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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