Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. John Warren De Roy, DC

Individual provider Chiropractor · NPI 1881865418

Dr. John Warren De Roy, DC is a Chiropractic in San Francisco, California. Graduated from Los Angeles College of Chiropractic in 1983, 43 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
43
Trained at
Los Angeles College of Chiropractic
Licensed in
CA
In the registry since
2008
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

120 Hickory St Ste B
San Francisco, CA 94102-5908
Phone: (415) 864-7860
Fax: (415) 864-6228
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 15780 (CA)

Record details

NPI number1881865418
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedMarch 24, 2008
Last updated in NPPESAugust 27, 2024
Certification dateAugust 27, 2024
Mailing address120 Hickory St, Ste. B., San Francisco, CA 94102-5908

Medicare enrollment

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

Medicare specialtyCHIROPRACTIC
Medical schoolLOS ANGELES COLLEGE OF CHIROPRACTIC
Graduated 1983 (43 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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