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

Ms. Nancy H. Cook, M.S.W.

Q: What is the NPI number for Nancy Cook?

The National Provider Identifier (NPI) for Nancy Cook is 1164618567, a Type 1 (individual) record in the CMS NPPES registry.

Social Worker in Santa Ana, CA · enumerated 2007 · practices at County of Orange.

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

National Provider Identifier

1164618567

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Registry record

Entity type Individual (Type 1)

Name Ms. Nancy H. Cook

Credential M.S.W.

Sex Female

Practice address Santa Ana, CA, 92705

Phone (714) 480-6416

Enumeration date Sep 19, 2007

Last updated in NPPES Jan 23, 2015

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

Taxonomy & licenses

104100000X Social Worker 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

Where does Nancy Cook practice?

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

What is the NPI number for Nancy Cook?

The National Provider Identifier (NPI) for Nancy Cook is 1164618567, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-01-23.