DR. PATRICK MICHAEL GREHAN PH.D.
NPI 1407924368
Psychologist - Clinical in Garden City, NY

Q: What is Patrick Grehan's NPI number?

The NPI number for Patrick Grehan is 1407924368. It was assigned to this individual provider in the NPPES registry on November 30, 2006.

Q: What is Patrick Grehan's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Patrick Grehan 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.

Active since November 30, 2006PECOS EnrolledAccepts Medicare Assignment

721 FRANKLIN AVE, GARDEN CITY, NY 11530(516) 256-9250 Get Directions Write a Review

NPPES record last updated: June 21, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Patrick Michael Grehan Ph.d. NPPES

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

DR. PATRICK MICHAEL GREHAN PH.D. (NPI 1407924368) is an individual clinical provider in Garden City, New York, licensed in New York (014194) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1998).

NPPES Registry Identity

NPI1407924368

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. PATRICK MICHAEL GREHANCredential: PH.D.

Location Address721 FRANKLIN AVEGarden City, NY 11530-4524

Mailing Address721 Franklin AveGarden City, NY 11530-4524 · (516) 256-9250

Phone(516) 256-9250

Sole ProprietorYes

Medical School CMSOtherGraduated 1998

Enumeration DateNovember 30, 2006

Last NPPES UpdateJune 21, 2013

✔ NPI 1407924368 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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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Patrick Michael Grehan Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1850494394

PECOS Enrollment IDI20070321000385

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11530 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$203.53 typical visit price

range $67.40 – $203.53

Typical copayment $50.88 (range $16.85 – $50.88)

Most-billed visit code 99205

Established Patient

$117.62 typical visit price

range $21.66 – $164.45

Typical copayment $29.40 (range $5.41 – $41.11)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ASHLEY LEIMSIDER

Specialist

721 FRANKLIN AVE
GARDEN CITY, NY 11530

Nassau County (516) 394-8029

GREHAN PSYCHOLOGICAL SOLUTIONS PLLC

Psychologist (Clinical)

721 FRANKLIN AVE
GARDEN CITY, NY 11530

Nassau County (516) 256-9250

IONAS SAPOUNTZIS PH.D

Psychologist

721 FRANKLIN AVE
GARDEN CITY, NY 11530

Nassau County (516) 248-6740

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 Patrick Grehan's NPI number?

The NPI number for Patrick Grehan is 1407924368. It was assigned to this individual provider in the NPPES registry on November 30, 2006.

Where is Patrick Grehan located?

Patrick Grehan practices at 721 Franklin Ave, Garden City, NY 11530. The listed phone number is (516) 256-9250.

What is Patrick Grehan's specialty?

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

Is Patrick Grehan enrolled in Medicare?

Yes. Patrick Grehan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Patrick Grehan 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.