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

Individual provider Obstetrics & Gynecology Physician · NPI 1770656753

William Scott Lock, MD is an Obstetrics/Gynecology in San Mateo, California. Qualified in 1998, 28 years ago. Practices with County of San Mateo, a 316-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
28
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

222 W 39th Ave
San Mateo, CA 94403-4364
Phone: (650) 573-2222
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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 A69314 (CA)

Record details

NPI number1770656753
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 16, 2006
Last updated in NPPESApril 23, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice County Of San Mateo — 316 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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