Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory Wittenberg

Dermatology Physician in Rapid City, SD · enumerated 2006.

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

National Provider Identifier

1760418420

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Registry record

Entity type Individual (Type 1)

Name Gregory Wittenberg

Sex Male

Practice address 2820 Mount Rushmore Rd, Rapid City, SD, 57701

Phone (605) 342-3280

Enumeration date Jun 24, 2006

Last updated in NPPES Nov 5, 2007

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 4524 (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

What is the NPI number for Gregory Wittenberg?

The National Provider Identifier (NPI) for Gregory Wittenberg is 1760418420, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gregory Wittenberg practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-05.