STEPHEN A WILLIAMS M.D.
NPI 1881613461
Obstetrics & Gynecology in Pleasanton, CA

Active since July 18, 2006
5575 W LAS POSITAS BLVD, #330, PLEASANTON, CA 94588(925) 734-6655(925) 734-9294 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Stephen A Williams M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEPHEN A WILLIAMS M.D. (NPI 1881613461) is an individual obstetrics & gynecology provider in Pleasanton, California, licensed in California (A31965) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1881613461
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameSTEPHEN A WILLIAMSCredential: M.D.
Location Address5575 W LAS POSITAS BLVD, #330Pleasanton, CA 94588-5801
Mailing Address5575 W Las Positas Blvd, #330Pleasanton, CA 94588-5801 · (925) 734-6655 · Fax (925) 734-9294
Fax(925) 734-9294
Sole ProprietorYes
Enumeration DateJuly 18, 2006
Last NPPES UpdateJuly 9, 2007
NPI 1881613461 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License Licensed in CA · A31965
Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

5575 W LAS POSITAS BLVD, Pleasanton, CA 94588

Other Identifiers 2

Medicare ID-Type Unspecified00A319650CA · Medicare
Medicare UPINA26659CA

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Nurse Practitioner (Women's Health)
5575 W LAS POSITAS BLVD, #330
PLEASANTON, CA 94588
Dermatology
5575 W LAS POSITAS BLVD, 220
PLEASANTON, CA 94588
Surgery (Surgical Oncology)
5575 W LAS POSITAS BLVD, 270
PLEASANTON, CA 94588
Family Medicine
5575 W LAS POSITAS BLVD, # 130
PLEASANTON, CA 94588
Surgery
5575 W LAS POSITAS BLVD, #270
PLEASANTON, CA 94588
Ophthalmology
5575 W LAS POSITAS BLVD, SUITE 240
PLEASANTON, CA 94588
Internal Medicine
5575 W LAS POSITAS BLVD, #130
PLEASANTON, CA 94588
Optometrist
5575 W LAS POSITAS BLVD, #240
PLEASANTON, CA 94588

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephen Williams's NPI number?

The NPI number for Stephen Williams is 1881613461. It was assigned to this individual provider in the NPPES registry on July 18, 2006.

Where is Stephen Williams located?

Stephen Williams practices at 5575 W Las Positas Blvd #330, Pleasanton, CA 94588. The listed phone number is (925) 734-6655.

What is Stephen Williams's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

When was this NPI record last updated?

The NPPES record for Stephen Williams was last updated on July 9, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.