Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Alliance Psychological Services of New York, Pllc

Clinical Psychologist in Ridgewood, NY · enumerated 2018 · authorized official William Somerville, Owner.

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

National Provider Identifier

1508374646

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Registry record

Entity type Organization (Type 2)

Legal business name Alliance Psychological Services of New York, Pllc

Practice address 6014 67th Ave # 1, Ridgewood, NY, 11385

Phone (718) 971-9731

Fax (718) 425-9862

Enumeration date Jan 10, 2018

Last updated in NPPES Jan 30, 2023

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 022436 (NY) Primary

Authorized official

Name William Somerville

Title Owner

Phone (718) 971-9731

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.

Read the full guide → Validate an NPI →

Frequently asked questions

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.

What type of organization is Alliance Psychological Services of New York, Pllc?

Alliance Psychological Services of New York, Pllc is registered in NPPES as a Clinical Psychologist (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-30.