Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicholas Lee Tieszen, RN

Flight Registered Nurse in Sioux Falls, SD · enumerated 2026.

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

National Provider Identifier

1760308290

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Registry record

Entity type Individual (Type 1)

Name Nicholas Lee Tieszen

Credential RN

Sex Male

Practice address 1325 S Cliff Ave, Sioux Falls, SD, 57105

Phone (605) 322-8000

Enumeration date Jun 29, 2026

Last updated in NPPES Jun 29, 2026

Taxonomy & licenses

163WF0300X Flight Registered Nurse Nursing Service Providers · License R060432 (SD) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

What specialty is Nicholas Tieszen?

Nicholas Tieszen is registered in NPPES with the primary taxonomy of Flight Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-29.