Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicholas Kahlert Johnson, M.D.

Urology Physician in Duluth, MN · enumerated 2008.

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

National Provider Identifier

1184870404

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Registry record

Entity type Individual (Type 1)

Name Nicholas Kahlert Johnson

Credential M.D.

Sex Male

Practice address 1001 E Superior St, Ste. L201, Duluth, MN, 55802

Phone (218) 249-7980

Fax (218) 249-7911

Enumeration date Aug 18, 2008

Last updated in NPPES Dec 4, 2020

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 55085 (MN) Primary

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Johnson?

Nicholas Johnson is registered in NPPES with the primary taxonomy of Urology Physician. 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 2020-12-04.