Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Maxwell Sumkin Butler, MD

Individual provider Family Medicine Physician · NPI 1326787755

Maxwell Sumkin Butler, MD is a Family Practice in Sun Prairie, Wisconsin. Graduated from University of Wisconsin School of Medicine in 2022, 4 years ago. Practices with University of Wisconsin Medical Foundation Inc, a 2,536-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
4
Trained at
University of Wisconsin School of Medicine
Licensed in
WI
In the registry since
2022
Specialties on file
2
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

2651 Windsor St
Sun Prairie, WI 53590-9825
Phone: (608) 837-2206
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 2402 Winnebago St, Madison, WI 53704-5341 — (608) 828-7603
  • 7102 Mineral Point Rd, Madison, WI 53717-1706 — (608) 828-7676
  • 4602 Eastpark Blvd, Madison, WI 53718-2002 — (608) 263-6400
  • 600 Highland Ave, Madison, WI 53792-0001 — (608) 262-2919

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 85401 (WI)
Addiction Medicine (Psychiatry & Neurology) Physician Taxonomy 2084A0401X · Licence 85401-20 (WI)

Record details

NPI number1326787755
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 2, 2022
Last updated in NPPESAugust 7, 2026
Certification dateAugust 7, 2026

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 2022 (4 years in practice)
Group practice University Of Wisconsin Medical Foundation Inc — 2536 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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