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County of Sonoma

Community/Behavioral Health Agency in Santa Rosa, CA · enumerated 2007 · authorized official Ruby Zhang, Department Analyst.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1154470300

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Registry record

Entity type Organization (Type 2)
Legal business name County of Sonoma
Other name <Unavail>
Practice address 1450 Neotomas Ave Ste 200, Santa Rosa, CA, 95405
Phone (707) 565-1138
Enumeration date Jan 9, 2007
Last updated in NPPES May 23, 2023

Taxonomy & classification

251S00000X Community/Behavioral Health Agency Agencies Primary

Authorized official

Name Ruby Zhang
Title Department Analyst
Phone (707) 565-7846

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for County of Sonoma?
The NPI for County of Sonoma is 1154470300, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for County of Sonoma?
NPPES lists Ruby Zhang (Department Analyst) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-23.