Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Gary Lynn Dennington, DDS

Dentist in Idabel, OK · enumerated 2008 · practices at Gary L Dennington DDS PC.

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

National Provider Identifier

1255591517

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Registry record

Entity type Individual (Type 1)

Name Dr. Gary Lynn Dennington

Credential DDS

Sex Male

Practice address Idabel, OK, 74745

Phone (580) 286-3051

Fax (580) 286-6960

Enumeration date Jun 11, 2008

Last updated in NPPES Jun 11, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

122300000X Dentist Dental Providers · License 4822 (OK) Primary

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License 4822 (OK) Secondary

332B00000X Durable Medical Equipment & Medical Supplies Suppliers · License 4822 (OK) Secondary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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

Is NPI 1255591517 active?

Yes, as of the latest NPPES snapshot, NPI 1255591517 is active (record last updated 2008-06-11).

How do I verify Gary Dennington's NPI record?

Cross-check NPI 1255591517 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Gary L Dennington DDS PC General Practice Dentistry · Idabel, OK NPI 1407983810

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-11.