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

Nancy Elizabeth Clark, LCSW

Q: What is the NPI number for Nancy Clark?

The National Provider Identifier (NPI) for Nancy Clark is 1811440894, a Type 1 (individual) record in the CMS NPPES registry.

Mental Health Counselor in Highland, CA · enumerated 2016.

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

National Provider Identifier

1811440894

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Registry record

Entity type Individual (Type 1)

Name Nancy Elizabeth Clark

Credential LCSW

Sex Female

Practice address Highland, CA, 92346

Phone (909) 754-5702

Fax (909) 748-0582

Enumeration date Jul 26, 2016

Last updated in NPPES Apr 10, 2018

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License ASW61645 (CA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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 Nancy Clark?

The National Provider Identifier (NPI) for Nancy Clark is 1811440894, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nancy Clark practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-10.