Lawrence Masket, MD
NPI 1093893877 · Emergency Medicine Physician · Portola Valley, CA
Lawrence Masket, MD is a Emergency Medicine Physician provider in Portola Valley, CA (NPI 1093893877).
Provider details
- NPI number
- 1093893877
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G33479 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2011-03-27
Frequently asked questions
- What is Lawrence Masket's NPI number?
- Lawrence Masket's National Provider Identifier (NPI) is 1093893877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lawrence Masket's specialty?
- Lawrence Masket is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lawrence Masket located?
- Lawrence Masket's practice location on file with NPPES is 101 Coquito Way, Portola Valley, CA 94028-7452.
- What is Lawrence Masket's phone number?
- The practice phone number listed in the NPPES registry for Lawrence Masket is (650) 854-5170.
- Is Lawrence Masket's NPI active?
- Yes — Lawrence Masket's NPI (1093893877) is active in the NPPES registry as of the last update on 2011-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.