Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Michael B. Colgan, MD

Individual provider Dermatology Physician · NPI 1447428321

Michael B. Colgan, MD is registered under Micrographic Dermatologic Surgery (Mds) in Eau Claire, Wisconsin. Graduated from University of Minnesota Medical School in 2007, 19 years ago. Practices with Mayo Clinic Health System-Northwest Wisconsin Region Inc, a 799-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Colorado, Minnesota and Wisconsin.

Years since qualifying
19
Trained at
University of Minnesota Medical School
Licensed in
CO, MN, WI
In the registry since
2008
Specialties on file
5
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1221 Whipple St
Eau Claire, WI 54703
Phone: (715) 838-5222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 700 West Ave S, La Crosse, WI 54601-4783 — (608) 392-6719
  • 700 West Ave S, La Crosse, WI 54601-4783 — (608) 392-6719

Specialties & licences

MOHS-Micrographic Surgery Physician (primary) Taxonomy 207ND0101X · Licence 57581 (WI)
Dermatology Physician Taxonomy 207N00000X · Licence 57581 (WI)
Dermatology Physician Taxonomy 207N00000X · Licence 51083 (MN)
Dermatology Physician Taxonomy 207N00000X · Licence 103829 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 2578 (CO)

Record details

NPI number1447428321
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 13, 2008
Last updated in NPPESOctober 6, 2020
Certification dateOctober 6, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMICROGRAPHIC DERMATOLOGIC SURGERY (MDS)
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 2007 (19 years in practice)
Group practice Mayo Clinic Health System-Northwest Wisconsin Region Inc — 799 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Melanoma (skin cancer) excision 150 times · 96th percentile
Removal of skin lesions 129 times · 77th percentile
Skin biopsy 83 times · 74th percentile
Removal of skin cancer 636 times · 70th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients573
Services billed 1,766 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Mayo Clinic Hospital Rochester Hospital · Rochester, MN · listed as Mayo Clinic Hospital-Rochester
  • Mayo Clinic Health System Chippewa Valley Hospital · Bloomer, WI
  • Mayo Clinic Health System Eau Claire Hospital Hospital · Eau Claire, WI
  • Mayo Clinic Health System-Northland Hospital · Barron, WI

Colleagues at Mayo Clinic Health System-Northwest Wisconsin Region Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 799 clinicians in the practice; 12 are shown here.

Other providers in Eau Claire