NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Gregory G Allen Jr, D.O. Inc

Internal Medicine Physician in Cranston, RI · enumerated 2009 · authorized official Mark Bergeron, Practice Manager.

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

National Provider Identifier

1609005958

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Gregory G Allen Jr, D.O. Inc
Practice address 1681 Cranston St, Suite D, Cranston, RI, 02920
Phone (401) 946-8446
Fax (401) 946-8340
Enumeration date Jul 8, 2009
Last updated in NPPES Jul 8, 2009

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License DO 00582 (RI) Primary

Authorized official

Name Mark Bergeron
Title Practice Manager
Phone (401) 946-6460

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 Gregory G Allen Jr, D.O. Inc?
Gregory G Allen Jr, D.O. Inc is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-08.