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

Dr. Darren R Tollefson, D.C.

Chiropractor in Dandridge, TN · enumerated 2007.

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

National Provider Identifier

1346361607

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Registry record

Entity type Individual (Type 1)

Name Dr. Darren R Tollefson

Credential D.C.

Sex Male

Practice address Dandridge, TN, 37725

Phone (865) 397-3388

Fax (865) 397-3389

Enumeration date Apr 3, 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

111N00000X Chiropractor Chiropractic Providers · License 1463 (TN) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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

Is NPI 1346361607 active?

Yes, as of the latest NPPES snapshot, NPI 1346361607 is active (record last updated 2007-07-08).

How do I verify Darren Tollefson's NPI record?

Cross-check NPI 1346361607 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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Joseph Brombach Emergency Medicine Physician · Dandridge, TN NPI 1114902541

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