OrganizationActive
Sonoma County Primary Care Ipa
NPI 1821112871 · Contractor · Foster City, CA
Sonoma County Primary Care Ipa is a Contractor organization in Foster City, CA (NPI 1821112871).
Provider details
- NPI number
- 1821112871
- Entity type
- Organization
- Primary specialty
- ContractorOther Service Providers
- Organization subpart
- No
- Authorized official
- Nancy Davidson, President(650) 358-3114
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(89/100 index)
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
1051 E. Hillsdale Blvd
Suite 750
Foster City, CA 94404-1640
Phone: (650) 358-3114
Fax: (650) 358-5706
Street-level locationGet directions
Mailing address
1051 E. Hillsdale Blvd
Foster City, CA 94404-1640
Registry dates
- Enumerated
- 2007-03-16
- Last updated
- 2012-01-04
Frequently asked questions
- What is Sonoma County Primary Care Ipa's NPI number?
- Sonoma County Primary Care Ipa's National Provider Identifier (NPI) is 1821112871, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sonoma County Primary Care Ipa?
- Sonoma County Primary Care Ipa is classified in the NPPES registry as Contractor (Other Service Providers).
- Where is Sonoma County Primary Care Ipa located?
- Sonoma County Primary Care Ipa's practice location on file with NPPES is 1051 E. Hillsdale Blvd, Foster City, CA 94404-1640.
- What is Sonoma County Primary Care Ipa's phone number?
- The practice phone number listed in the NPPES registry for Sonoma County Primary Care Ipa is (650) 358-3114.
- Who is the authorized official for Sonoma County Primary Care Ipa?
- The authorized official listed on Sonoma County Primary Care Ipa's NPPES record is Nancy Davidson, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sonoma County Primary Care Ipa's NPI active?
- Yes — Sonoma County Primary Care Ipa's NPI (1821112871) is active in the NPPES registry as of the last update on 2012-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.