Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Aaron David Larsen, D.D.S.

Q: What is the NPI number for Aaron Larsen?

The National Provider Identifier (NPI) for Aaron Larsen is 1033407531, a Type 1 (individual) record in the CMS NPPES registry.

General Practice Dentistry in Glenrock, WY · enumerated 2011.

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

National Provider Identifier

1033407531

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Registry record

Entity type Individual (Type 1)

Name Dr. Aaron David Larsen

Credential D.D.S.

Sex Male

Practice address 925 Wbirch, Glenrock, WY, 82637

Phone (307) 436-8770

Fax (307) 436-8771

Enumeration date Jul 18, 2011

Last updated in NPPES Jul 18, 2011

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 1278 (WY) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Aaron Larsen practice?

The practice location on file with NPPES is in Glenrock, WY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Aaron Larsen?

The National Provider Identifier (NPI) for Aaron Larsen is 1033407531, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-18.