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Roy C. Grzesiak, Ph.D., PC

Psychologist in Scotch Plains, NJ · enumerated 2009 · authorized official Roy Grzesiak, President.

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

National Provider Identifier

1033357108

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Registry record

Entity type Organization (Type 2)
Legal business name Roy C. Grzesiak, Ph.D., PC
Practice address 567 Park Ave Ste 203, Scotch Plains, NJ, 07076
Phone (908) 322-1313
Fax (908) 322-1414
Enumeration date Jan 28, 2009
Last updated in NPPES Jan 28, 2009

Taxonomy & classification

103T00000X Psychologist Behavioral Health & Social Service Providers · License SI100174900 (NJ) Primary

Authorized official

Name Roy Grzesiak
Title President
Phone (908) 322-1313

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.

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Frequently asked questions

What is the NPI number for Roy C. Grzesiak, Ph.D., PC?
The NPI for Roy C. Grzesiak, Ph.D., PC is 1033357108, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Roy C. Grzesiak, Ph.D., PC?
NPPES lists Roy Grzesiak (President) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-28.