Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rosalyn Maria Washington, RAS

Counselor in San Francisco, CA · enumerated 2006 · practices at Seneca Family of Agencies.

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

National Provider Identifier

1649336678

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Registry record

Entity type Individual (Type 1)

Name Rosalyn Maria Washington

Credential RAS

Sex Female

Practice address 45 Farallones St, San Francisco, CA, 94112

Phone (415) 406-1232

Fax (415) 406-1234

Enumeration date Dec 27, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Rosalyn Washington?

The National Provider Identifier (NPI) for Rosalyn Washington is 1649336678, a Type 1 (individual) record in the CMS NPPES registry.

Where does Rosalyn Washington practice?

The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.