Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory Collier

Addiction (Substance Use Disorder) Counselor in Monticello, NY · enumerated 2015 · practices at Council on Alcoholism and Drug Abuse of Sullivan Co., Inc..

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

National Provider Identifier

1700265154

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Registry record

Entity type Individual (Type 1)

Name Gregory Collier

Sex Male

Practice address 17 Hamilton Ave, Monticello, NY, 12701

Phone (845) 794-8080

Enumeration date May 19, 2015

Last updated in NPPES May 19, 2015

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 23071 (NY) 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.

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Frequently asked questions

How do I verify Gregory Collier's NPI record?

Cross-check NPI 1700265154 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1700265154 active?

Yes, as of the latest NPPES snapshot, NPI 1700265154 is active (record last updated 2015-05-19).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-19.