Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Gastroenterology Associates of the Southern Tier

Gastroenterology Physician in Elmira, NY · enumerated 2006 · authorized official Bruno Mazza, Physician.

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

National Provider Identifier

1134226491

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Registry record

Entity type Organization (Type 2)

Legal business name Gastroenterology Associates of the Southern Tier

Practice address 378 W Church St, Elmira, NY, 14901

Phone (607) 734-7121

Fax (607) 734-0614

Enumeration date Sep 20, 2006

Last updated in NPPES Apr 10, 2008

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Bruno Mazza

Title Physician

Phone (607) 734-7121

Other identifiers

Identifier	Type	State	Issuer
CN0726	Other	NY	RAILROAD MEDICARE GROUP #

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-04-10. Verify at npiregistry.cms.hhs.gov.

Where is Gastroenterology Associates of the Southern Tier located?

The practice location on file with NPPES is in Elmira, NY.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-10.