Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory Madsen, PA-C

Physician Assistant in Decorah, IA · enumerated 2005.

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

National Provider Identifier

1760482251

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Registry record

Entity type Individual (Type 1)

Name Gregory Madsen

Credential PA-C

Sex Male

Practice address 901 Montgomery St, Decorah, IA, 52101

Phone (563) 382-2911

Enumeration date Jul 26, 2005

Last updated in NPPES Jul 27, 2007

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 1253023 (WI) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 001757 (IA) Primary

Other identifiers

Identifier	Type	State	Issuer
41962200	Medicaid	WI	-

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 Gregory Madsen?

Gregory Madsen is registered in NPPES with the primary taxonomy of Physician Assistant. 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 2007-07-27.