Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gary A Keller, M.D. PH.D

Surgery Physician in Bangor, ME · enumerated 2006.

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

National Provider Identifier

1083640304

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Registry record

Entity type Individual (Type 1)

Name Dr. Gary A Keller

Credential M.D. PH.D

Sex Male

Practice address 417 State St Ste 421, Bangor, ME, 04401

Phone (207) 973-5293

Fax (207) 973-5263

Enumeration date Jun 26, 2006

Last updated in NPPES Aug 8, 2016

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 012479 (ME) Primary

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

How do I verify Gary Keller's NPI record?

Cross-check NPI 1083640304 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1083640304 active?

Yes, as of the latest NPPES snapshot, NPI 1083640304 is active (record last updated 2016-08-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-08-08.