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Gregory I. Mack, Ph.D.:Clinical, Police & Forensic Psych Svs Pllc

Clinical Psychologist in Yorktown Heights, NY · enumerated 2017 · authorized official Gregory Mack, Owner.

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

National Provider Identifier

1316487259

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Registry record

Entity type Organization (Type 2)
Legal business name Gregory I. Mack, Ph.D.:Clinical, Police & Forensic Psych Svs Pllc
Other name <Unavail>
Practice address 345 Kear St, Suite 202, Yorktown Heights, NY, 10598
Phone (845) 282-3367
Fax (914) 743-1613
Enumeration date Feb 25, 2017
Last updated in NPPES Feb 25, 2017

Taxonomy & classification

103TA0400X Addiction (Substance Use Disorder) Psychologist Behavioral Health & Social Service Providers · License 016597 (NY) Secondary
103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License 016597 (NY) Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 016597 (NY) Primary
103TF0200X Forensic Psychologist Behavioral Health & Social Service Providers · License 016597 (NY) Secondary
103TP2701X Group Psychotherapy Psychologist Behavioral Health & Social Service Providers · License 016597 (NY) Secondary

Authorized official

Name Gregory Mack
Title Owner
Phone (845) 282-3367

Other identifiers

Identifier Type State Issuer
03577942 Medicaid NY -

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 type of organization is Gregory I. Mack, Ph.D.:Clinical, Police & Forensic Psych Svs Pllc?
Gregory I. Mack, Ph.D.:Clinical, Police & Forensic Psych Svs Pllc is registered in NPPES as a Clinical Psychologist (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-25.