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

Michael L Allan, MD

Individual provider Gastroenterology Physician · NPI 1558300822

Michael L Allan, MD practises Gastroenterology in Madison, Wisconsin. Graduated from University of Wisconsin School of Medicine in 1997, 29 years ago. Practices with Dean Health Systems Inc, a 1,184-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
29
Trained at
University of Wisconsin School of Medicine
Licensed in
WI
In the registry since
2006
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

700 S Park St
Madison, WI 53715-1830
Phone: (608) 260-2900
Fax: (608) 260-2977
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 700 S Park St, Madison, WI 53715-1830 — (608) 260-2900

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 45234-020 (WI)

Record details

NPI number1558300822
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 5, 2006
Last updated in NPPESOctober 27, 2020
Certification dateOctober 27, 2020

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Dean Health Systems Inc — 1184 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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.

Upper gastrointestinal (GI) endoscopy for acid reflux 282 times · 95th percentile
Colonoscopy 202 times · 93rd 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 patients531
Services billed 1,788 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

  • Columbus Community Hospital Hospital · Columbus, WI · listed as Columbus Community Hospital Inc
  • Upland Hills Health Hospital · Dodgeville, WI · listed as Upland Hills Health, Inc
  • Ssm Health St Clare Hospital - Baraboo Hospital · Baraboo, WI
  • Ssm Health St Mary'S Hospital - Janesville Hospital · Janesville, WI
  • Ssm Health St Mary'S Hospital - Madison Hospital · Madison, WI

Colleagues at Dean Health Systems Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1184 clinicians in the practice; 12 are shown here.

Other providers in Madison