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GREHAN PSYCHOLOGICAL SOLUTIONS PLLC
NPI 1871839415
Psychologist - Clinical in Garden City, NY

Active since January 01, 2013
721 FRANKLIN AVE, GARDEN CITY, NY 11530(516) 256-9250(516) 248-6788 Get Directions Write a Review

NPPES record last updated: June 21, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Grehan Psychological Solutions Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREHAN PSYCHOLOGICAL SOLUTIONS PLLC (NPI 1871839415) is a healthcare organization registered as a clinical in Garden City, New York and active in the NPI registry since January 2013. The organization lists Patrick Grehan, Owner, as its authorized official.

NPPES Registry Identity

NPI1871839415
Entity TypeOrganization
Primary Taxonomy103TC0700X
Legal Business NameGREHAN PSYCHOLOGICAL SOLUTIONS PLLC
Location Address721 FRANKLIN AVEGarden City, NY 11530-4524
Mailing Address721 Franklin AveGarden City, NY 11530-4524 · (516) 256-9250 · Fax (516) 248-6788
Phone(516) 256-9250
Fax(516) 248-6788
Organization SubpartNo
Authorized OfficialPatrick GrehanOwner · (516) 256-9250
Enumeration DateJanuary 1, 2013
Last NPPES UpdateJune 21, 2013
✔ NPI 1871839415 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in NY · 014194
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
721 FRANKLIN AVE, Garden City, NY 11530
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Grehan Psychological Solutions Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Grehan Psychological Solutions PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Patrick Grehan, PH.D.
Clinical Psychologist
NPI 1407924368
721 FRANKLIN AVE
Garden City, NY 11530
(516) 256-9250
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Grehan Psychological Solutions PLLC's NPI number?

The NPI number for Grehan Psychological Solutions PLLC is 1871839415. It was assigned to this organization in the NPPES registry on January 1, 2013.

Where is Grehan Psychological Solutions PLLC located?

Grehan Psychological Solutions PLLC is located at 721 Franklin Ave, Garden City, NY 11530. The listed phone number is (516) 256-9250.

What is Grehan Psychological Solutions PLLC's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Grehan Psychological Solutions PLLC enrolled in Medicare?

Yes. Grehan Psychological Solutions PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Grehan Psychological Solutions PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Psychologist) reassigns their Medicare billing to Grehan Psychological Solutions PLLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Grehan Psychological Solutions PLLC was last updated on June 21, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.