Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Damon James Thielen, DMD

Dentist in Sioux Falls, SD · enumerated 2012.

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

National Provider Identifier

1932467875

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Registry record

Entity type Individual (Type 1)

Name Dr. Damon James Thielen

Credential DMD

Sex Male

Practice address 3813 S Kiwanis Cir, Sioux Falls, SD, 57105

Phone (605) 280-2337

Enumeration date Apr 29, 2012

Last updated in NPPES May 31, 2013

Taxonomy & licenses

122300000X Dentist Dental Providers · License 6864-15 (WI) Primary

1223P0221X Pediatric Dentistry Dental Providers · License D0982 (SD) Secondary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Damon Thielen?

Damon Thielen is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-31.