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Dr. James S Williams, D.C.

Chiropractor in Castro Valley, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1083707038

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Registry record

Entity type Individual (Type 1)
Name Dr. James S Williams
Credential D.C.
Sex Male
Practice address 21168 Redwood Rd Ste 100, Castro Valley, CA, 94546
Phone (510) 582-4880
Fax (510) 582-5408
Enumeration date Oct 2, 2006
Last updated in NPPES Nov 5, 2008

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License DC 10567 (CA) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What specialty is James Williams?
James Williams is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-05.