Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory Kent Nissen

Vascular Surgery Physician in Sioux Falls, SD · enumerated 2011.

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

National Provider Identifier

1174813729

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Registry record

Entity type Individual (Type 1)

Name Gregory Kent Nissen

Sex Male

Practice address 3801 S Elmwood Ave, Sioux Falls, SD, 57105

Phone (605) 306-6140

Fax (605) 306-6500

Enumeration date Apr 17, 2011

Last updated in NPPES Aug 7, 2022

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 10915 (SD) Primary

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

Where does Gregory Nissen practice?

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

What is the NPI number for Gregory Nissen?

The National Provider Identifier (NPI) for Gregory Nissen is 1174813729, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-07.