Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Susan Walker Ruskin, M.S.W

Clinical Social Worker in Mill Valley, CA · enumerated 2010.

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

National Provider Identifier

1992021380

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Susan Walker Ruskin

Credential M.S.W

Sex Female

Practice address Mill Valley, CA, 94941

Phone (415) 381-8336

Enumeration date Apr 11, 2010

Last updated in NPPES Apr 11, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCS10871 (CA) Primary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC4564 (CA) Secondary

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 specialty is Susan Ruskin?

Susan Ruskin is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-04-11.