Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael B. Colgan, MD

MOHS-Micrographic Surgery Physician in Eau Claire, WI · enumerated 2008.

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

National Provider Identifier

1447428321

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Registry record

Entity type Individual (Type 1)

Name Michael B. Colgan

Credential MD

Sex Male

Practice address 1221 Whipple St, Eau Claire, WI, 54703

Phone (715) 838-5222

Enumeration date Feb 13, 2008

Last updated in NPPES Oct 6, 2020

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 57581 (WI) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 51083 (MN) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 103829 (MN) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 2578 (CO) Secondary

207ND0101X MOHS-Micrographic Surgery Physician Allopathic & Osteopathic Physicians · License 57581 (WI) 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

Where does Michael Colgan practice?

The practice location on file with NPPES is in Eau Claire, WI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Michael Colgan?

The National Provider Identifier (NPI) for Michael Colgan is 1447428321, 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 2020-10-06.