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

Gwendolyn Diane Smith, MSW

Clinical Social Worker in Mountain View, CA · enumerated 2010.

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

National Provider Identifier

1578864468

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Registry record

Entity type Individual (Type 1)

Name Gwendolyn Diane Smith

Credential MSW

Sex Female

Practice address Mountain View, CA, 94040

Phone (408) 523-3103

Fax (408) 733-6735

Enumeration date Nov 8, 2010

Last updated in NPPES Nov 8, 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 29336 (CA) 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 Gwendolyn Smith?

The National Provider Identifier (NPI) for Gwendolyn Smith is 1578864468, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gwendolyn Smith practice?

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

Other providers at this practice address

Browse all →

Philip Brosterhous Family Medicine Physician · Mountain View, CA NPI 1700847092 Geoffrey Adamson Reproductive Endocrinology Physician · Mountain View, CA NPI 1780781690 Richard Slavin Surgery Physician · Mountain View, CA NPI 1205918604

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-11-08.