NPI Portal NPI Lookup & Verification

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

Dr. Robert A.D. Gregory, D.C.

Chiropractor in Nanuet, NY · enumerated 2006.

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

National Provider Identifier

1780752600

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Registry record

Entity type Individual (Type 1)
Name Dr. Robert A.D. Gregory
Credential D.C.
Sex Male
Practice address Nanuet, NY, 10954
Phone (845) 623-3939
Fax (845) 624-5808
Enumeration date Nov 30, 2006
Last updated in NPPES Mar 16, 2016

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License X000136-1 (NY) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier Type State Issuer
C00136-4 Other NY WORKER'S COMPENSATION
P643083 Other NY OXFORD
X0464 Other NY BLUE CROSS

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

What is the NPI number for Robert Gregory?
The National Provider Identifier (NPI) for Robert Gregory is 1780752600, a Type 1 (individual) record in the CMS NPPES registry.
Where does Robert Gregory practice?
The practice location on file with NPPES is in Nanuet, NY. 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 2016-03-16.