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

Lawrence S. Masket, MD

Individual provider Emergency Medicine Physician · NPI 1093893877

Lawrence S. Masket, MD is an Emergency Medicine Physician in Portola Valley, 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.

See every abbreviation used in this directory →

Practice location Address checks out

101 Coquito Way
Portola Valley, CA 94028-7452
Phone: (650) 854-5170
Fax: (650) 854-5106
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence G33479 (CA)

Record details

NPI number1093893877
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 1, 2006
Last updated in NPPESMarch 27, 2011