Grehan Psychological Solutions PLLC
NPI 1871839415 · Clinical Psychologist · Garden City, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grehan Psychological Solutions PLLC is a Clinical Psychologist organization in Garden City, NY (NPI 1871839415).
Provider details
- NPI number
- 1871839415
- Entity type
- Organization
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Patrick Grehan, Owner(516) 256-9250
- License
- 014194 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-01-01
- Last updated
- 2013-06-21
Frequently asked questions
- What is Grehan Psychological Solutions PLLC's NPI number?
- Grehan Psychological Solutions PLLC's National Provider Identifier (NPI) is 1871839415, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Grehan Psychological Solutions PLLC?
- Grehan Psychological Solutions PLLC is classified in the NPPES registry as Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Grehan Psychological Solutions PLLC located?
- Grehan Psychological Solutions PLLC's practice location on file with NPPES is 721 Franklin Ave, Garden City, NY 11530-4524.
- What is Grehan Psychological Solutions PLLC's phone number?
- The practice phone number listed in the NPPES registry for Grehan Psychological Solutions PLLC is (516) 256-9250.
- Does Grehan Psychological Solutions PLLC accept Medicare?
- Grehan Psychological Solutions PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Grehan Psychological Solutions PLLC?
- The authorized official listed on Grehan Psychological Solutions PLLC's NPPES record is Patrick Grehan, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Grehan Psychological Solutions PLLC's NPI active?
- Yes — Grehan Psychological Solutions PLLC's NPI (1871839415) is active in the NPPES registry as of the last update on 2013-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.