County of Sonoma
NPI 1558570937 · Preferred Provider Organization · Santa Rosa, CA
County of Sonoma is a Preferred Provider Organization organization in Santa Rosa, CA (NPI 1558570937).
Provider details
- NPI number
- 1558570937
- Entity type
- Organization
- Primary specialty
- Preferred Provider OrganizationManaged Care Organizations
- Organization subpart
- No
- Authorized official
- Ruby Zhang, Department Analyst(707) 565-7846
Specialties & taxonomies
Managed Care Organizations
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
Other names (DBA / former)
- Other name
- Fee for Service Psychologist
- Other name
- Fee for Service Psychologist
Registry dates
- Enumerated
- 2007-05-22
- Last updated
- 2023-05-23
- Certified
- 2023-05-23
Frequently asked questions
- What is County of Sonoma's NPI number?
- County of Sonoma's National Provider Identifier (NPI) is 1558570937, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is County of Sonoma?
- County of Sonoma is classified in the NPPES registry as Preferred Provider Organization (Managed Care Organizations).
- Where is County of Sonoma located?
- County of Sonoma's practice location on file with NPPES is 1450 Neotomas Ave Ste 200, Santa Rosa, CA 95405-7574.
- What is County of Sonoma's phone number?
- The practice phone number listed in the NPPES registry for County of Sonoma is (707) 565-4850.
- Who is the authorized official for County of Sonoma?
- The authorized official listed on County of Sonoma's NPPES record is Ruby Zhang, Department Analyst. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is County of Sonoma's NPI active?
- Yes — County of Sonoma's NPI (1558570937) is active in the NPPES registry as of the last update on 2023-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.