Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Meredith Harvey Walin, ASW

Social Worker in Martinez, CA · enumerated 2006.

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

National Provider Identifier

1164580924

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Registry record

Entity type Individual (Type 1)

Name Meredith Harvey Walin

Credential ASW

Sex Female

Practice address 1320 Arnold Dr, Suite 160, Martinez, CA, 94553

Phone (925) 580-8157

Enumeration date Dec 5, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 20827 (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 Meredith Walin?

The National Provider Identifier (NPI) for Meredith Walin is 1164580924, a Type 1 (individual) record in the CMS NPPES registry.

Where does Meredith Walin practice?

The practice location on file with NPPES is in Martinez, 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.