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

Dr. William Eldridge Williams, MD

Individual provider Adult Medicine Physician · NPI 1407034473

Dr. William Eldridge Williams, MD is an Adult Medicine Physician in San Quentin, California. Licensed in California. Registered with an NPI since 2008.

Licensed in
CA
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1 Main St
San Quentin, CA 94964-1000
Phone: (415) 454-1460
Fax: (415) 455-5091
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Medicine Physician (primary) Taxonomy 207QA0505X · Licence A70449 (CA)

Record details

NPI number1407034473
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 1, 2008
Last updated in NPPESFebruary 1, 2008
Mailing address1 Main St, San Quentin, CA 94964-1000