Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Whitney Marie Irmen, LSW

Social Worker in Mandan, ND · enumerated 2024.

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

National Provider Identifier

1811711161

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Registry record

Entity type Individual (Type 1)

Name Whitney Marie Irmen

Credential LSW

Sex Female

Practice address 210 2nd Ave Nw, Mandan, ND, 58554

Phone (701) 667-3383

Fax (701) 667-3384

Enumeration date Nov 13, 2024

Last updated in NPPES Jul 21, 2026

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 5751 (ND) Primary

343900000X Non-emergency Medical Transport (VAN) Transportation Services Secondary

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 Whitney Irmen?

Whitney Irmen is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Lisa Stymeist Case Manager/Care Coordinator · Mandan, ND NPI 1013006253 Traci Schlag Case Manager/Care Coordinator · Mandan, ND NPI 1427147594 Kimberly Olson Case Manager/Care Coordinator · Mandan, ND NPI 1972808343 Hailee Hopfauf Social Worker · Mandan, ND NPI 1467968487 Briana Wollan Case Manager/Care Coordinator · Mandan, ND NPI 1063057222 Keyona Gonzalez Case Manager/Care Coordinator · Mandan, ND NPI 1689295941 Elizabeth Vettel Case Manager/Care Coordinator · Mandan, ND NPI 1508528027 Danielle Benz Case Manager/Care Coordinator · Mandan, ND NPI 1629716741

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-21.