Gary B. Marcus, M.D. - a Professional Corporation
NPI 1902262710 · Specialist · Pinole, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary B. Marcus, M.D. - a Professional Corporation is a Specialist organization in Pinole, CA (NPI 1902262710).
Provider details
- NPI number
- 1902262710
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Estella Olsen, Administrator(510) 734-0677
- License
- C28611 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
- 2016-01-08
- Last updated
- 2016-02-04
Frequently asked questions
- What is Gary B. Marcus, M.D. - a Professional Corporation's NPI number?
- Gary B. Marcus, M.D. - a Professional Corporation's National Provider Identifier (NPI) is 1902262710, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gary B. Marcus, M.D. - a Professional Corporation?
- Gary B. Marcus, M.D. - a Professional Corporation is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is Gary B. Marcus, M.D. - a Professional Corporation located?
- Gary B. Marcus, M.D. - a Professional Corporation's practice location on file with NPPES is 1430 Tara Hills Dr, Pinole, CA 94564-2580.
- What is Gary B. Marcus, M.D. - a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Gary B. Marcus, M.D. - a Professional Corporation is (510) 640-0019.
- Does Gary B. Marcus, M.D. - a Professional Corporation accept Medicare?
- Gary B. Marcus, M.D. - a Professional Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Gary B. Marcus, M.D. - a Professional Corporation?
- The authorized official listed on Gary B. Marcus, M.D. - a Professional Corporation's NPPES record is Estella Olsen, Administrator. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gary B. Marcus, M.D. - a Professional Corporation's NPI active?
- Yes — Gary B. Marcus, M.D. - a Professional Corporation's NPI (1902262710) is active in the NPPES registry as of the last update on 2016-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.