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

William S Warshal, MD

Individual provider Geriatric Medicine (Family Medicine) Physician · NPI 1285620666

William S Warshal, MD is a Geriatric Medicine (Family Medicine) Physician in Los Gatos, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2005
Specialties on file
2
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

15251 National Ave Ste 104
Los Gatos, CA 95032-2400
Phone: (408) 605-8612
Fax: (650) 631-2448
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence G41468 (CA)
Geriatric Medicine (Family Medicine) Physician Taxonomy 207QG0300X · Licence G41468 (CA)

Record details

NPI number1285620666
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 21, 2005
Last updated in NPPESMay 1, 2024
Certification dateMay 1, 2024
Mailing address15251 National Ave Ste 104, Los Gatos, CA 95032-2400

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