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

Stephen A Williams, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1881613461

Stephen A Williams, MD is an Obstetrics & Gynecology Physician in Pleasanton, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

5575 W Las Positas Blvd #330
Pleasanton, CA 94588-5801
Phone: (925) 734-6655
Fax: (925) 734-9294
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence A31965 (CA)

Record details

NPI number1881613461
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 18, 2006
Last updated in NPPESJuly 9, 2007
Mailing address5575 W Las Positas Blvd, 330, Pleasanton, CA 94588-5801

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