Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Hartman Larson, D.D.S.

Pediatric Dentistry in Fresno, CA · enumerated 2006.

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

National Provider Identifier

1811068109

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Hartman Larson

Credential D.D.S.

Sex Male

Practice address 7780 N Fresno St, Suite 105, Fresno, CA, 93720

Phone (559) 431-9701

Enumeration date Nov 10, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223P0221X Pediatric Dentistry Dental Providers · License 25928 (CA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
B 25928-01	Other	CA	MEDI-CAL

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

Is NPI 1811068109 active?

Yes, as of the latest NPPES snapshot, NPI 1811068109 is active (record last updated 2007-07-08).

How do I verify Thomas Larson's NPI record?

Cross-check NPI 1811068109 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.