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

Dr. Richard Ashworth Duff, DC

Individual provider Chiropractor · NPI 1124159918

Dr. Richard Ashworth Duff, DC is a Chiropractor in San Francisco, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

2001 Union St Ste # 105
San Francisco, CA 94123-4114
Phone: (415) 563-0603
Fax: (415) 563-1110
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence DC20576 (CA)

Record details

NPI number1124159918
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedMarch 7, 2007
Last updated in NPPESJuly 8, 2007

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