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

Theresa M Hennessey, LCSW

Clinical Social Worker in Agoura Hills, CA · enumerated 2019 · practices at Irene S. Fruchtbaum, Ph.D., Q.M.E..

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

National Provider Identifier

1023653409

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Registry record

Entity type Individual (Type 1)

Name Theresa M Hennessey

Credential LCSW

Sex Female

Practice address Agoura Hills, CA, 91301

Phone (818) 584-2494

Enumeration date Nov 9, 2019

Last updated in NPPES Mar 10, 2021

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 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.

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Frequently asked questions

Is NPI 1023653409 active?

Yes, as of the latest NPPES snapshot, NPI 1023653409 is active (record last updated 2021-03-10).

How do I verify Theresa Hennessey's NPI record?

Cross-check NPI 1023653409 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Irene S. Fruchtbaum, Ph.D., Q.M.E. Group Psychotherapy Psychologist · Agoura Hills, CA NPI 1447010053

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-10.