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

Dr. Larry Gene Irwin, DDS

General Practice Dentistry in Knoxville, TN · enumerated 2007 · practices at Bennett Kizer, DDS, Pllc.

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

National Provider Identifier

1902938475

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Registry record

Entity type Individual (Type 1)

Name Dr. Larry Gene Irwin

Credential DDS

Sex Male

Practice address Knoxville, TN, 37934

Phone (865) 966-8716

Fax (865) 966-1209

Enumeration date Mar 11, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DS1669 (TN) Primary

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 1902938475 active?

Yes, as of the latest NPPES snapshot, NPI 1902938475 is active (record last updated 2007-07-08).

How do I verify Larry Irwin's NPI record?

Cross-check NPI 1902938475 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Murray Miller Dentist · Knoxville, TN NPI 1477690923 Bennett Kizer, DDS, Pllc Dental Clinic/Center · Knoxville, TN NPI 1184320368

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.