NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Gastrointestinal Group of North Jersey PA

Gastroenterology Physician in Wayne, NJ · enumerated 2005 · authorized official Robert Shlien, MD.

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

National Provider Identifier

1578565552

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Gastrointestinal Group of North Jersey PA
Practice address 1777 Hamburg Turnpike, Suite 305, Wayne, NJ, 07470
Phone (973) 839-6400
Fax (973) 839-7083
Enumeration date Aug 10, 2005
Last updated in NPPES Apr 10, 2019

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Robert Shlien
Title MD
Phone (973) 839-6400

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 the NPI number for Gastrointestinal Group of North Jersey PA?
The NPI for Gastrointestinal Group of North Jersey PA is 1578565552, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Gastrointestinal Group of North Jersey PA?
NPPES lists Robert Shlien (MD) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-10.