Arthur Gallagher, PSYD
NPI 1871397604 · Clinical Psychologist · Stony Brook, NY
Enrolled with Medicare as Order and Referring Only - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arthur Gallagher, PSYD is a Clinical Psychologist provider in Stony Brook, NY (NPI 1871397604).
Provider details
- NPI number
- 1871397604
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 026592 (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
1 yr 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
- 2025-04-02
- Last updated
- 2025-04-02
- Certified
- 2025-04-02
Frequently asked questions
- What is Arthur Gallagher's NPI number?
- Arthur Gallagher's National Provider Identifier (NPI) is 1871397604, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arthur Gallagher's specialty?
- Arthur Gallagher is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Arthur Gallagher located?
- Arthur Gallagher's practice location on file with NPPES is Po Box 51, Stony Brook, NY 11790-0051.
- What is Arthur Gallagher's phone number?
- The practice phone number listed in the NPPES registry for Arthur Gallagher is (631) 621-2744.
- Does Arthur Gallagher accept Medicare?
- Arthur Gallagher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arthur Gallagher's NPI active?
- Yes — Arthur Gallagher's NPI (1871397604) is active in the NPPES registry as of the last update on 2025-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.