Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Greater Waterbury Oral & Maxillofacial Surgeons LLC

Oral and Maxillofacial Surgery (Dentist) in Waterbury, CT · enumerated 2006 · authorized official John Hillgen, Owner.

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

National Provider Identifier

1033136825

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Registry record

Entity type Organization (Type 2)

Legal business name Greater Waterbury Oral & Maxillofacial Surgeons LLC

Practice address 1389 W Main St, Suite 320, Waterbury, CT, 06708

Phone (203) 573-1427

Fax (203) 574-2460

Enumeration date Jul 16, 2006

Last updated in NPPES Apr 9, 2015

Taxonomy & classification

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers Primary

Authorized official

Name John Hillgen

Title Owner

Phone (203) 573-1427

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

Who is the authorized official for Greater Waterbury Oral & Maxillofacial Surgeons LLC?

NPPES lists John Hillgen (Owner) as the authorized official for this organization.

What is the NPI number for Greater Waterbury Oral & Maxillofacial Surgeons LLC?

The NPI for Greater Waterbury Oral & Maxillofacial Surgeons LLC is 1033136825, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-09.