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

Dr. Diane C. Hennessy, D.C. CDN

Nutritionist in Nanuet, NY · enumerated 2006.

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

National Provider Identifier

1922170729

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Registry record

Entity type Individual (Type 1)
Name Dr. Diane C. Hennessy
Credential D.C. CDN
Sex Female
Practice address Nanuet, NY, 10954
Phone (845) 623-3939
Fax (845) 624-5808
Enumeration date Nov 15, 2006
Last updated in NPPES Sep 11, 2025

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License X005349-1 (NY) Secondary
133N00000X Nutritionist Dietary & Nutritional Service Providers · License 004088 (NY) Primary

Other identifiers

Identifier Type State Issuer
5967328 Other NY AETNA PPO
C0-5449-8 Other NY WORKERS COMPENSATION
1014308 Other NY AMERICAN SPECIALTY HEALTH

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

Where does Diane Hennessy practice?
The practice location on file with NPPES is in Nanuet, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diane Hennessy?
The National Provider Identifier (NPI) for Diane Hennessy is 1922170729, 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 2025-09-11.