Gary Pasternak, MD
NPI 1194820688 · Internal Medicine Physician · San Mateo, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Pasternak, MD is a Internal Medicine Physician provider in San Mateo, CA (NPI 1194820688).
Provider details
- NPI number
- 1194820688
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G55926 (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
- 2006-09-13
- Last updated
- 2010-12-17
Frequently asked questions
- What is Gary Pasternak's NPI number?
- Gary Pasternak's National Provider Identifier (NPI) is 1194820688, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Pasternak's specialty?
- Gary Pasternak is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Pasternak located?
- Gary Pasternak's practice location on file with NPPES is 1670 South Amphlett Blvd., San Mateo, CA 94403.
- What is Gary Pasternak's phone number?
- The practice phone number listed in the NPPES registry for Gary Pasternak is (650) 554-1000.
- Does Gary Pasternak accept Medicare?
- Gary Pasternak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Pasternak's NPI active?
- Yes — Gary Pasternak's NPI (1194820688) is active in the NPPES registry as of the last update on 2010-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.