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Grehan Psychological Solutions Pllc

Clinical Psychologist in Garden City, NY · enumerated 2013 · authorized official Patrick Grehan, Owner.

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

National Provider Identifier

1871839415

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Registry record

Entity type Organization (Type 2)
Legal business name Grehan Psychological Solutions Pllc
Practice address 721 Franklin Ave, Garden City, NY, 11530
Phone (516) 256-9250
Fax (516) 248-6788
Enumeration date Jan 1, 2013
Last updated in NPPES Jun 21, 2013

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 014194 (NY) Primary

Authorized official

Name Patrick Grehan
Title Owner
Phone (516) 256-9250

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 Grehan Psychological Solutions Pllc?
Grehan Psychological Solutions 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 2013-06-21.