Individual Healthcare Provider
Maxwell Sumkin Butler, MD
Provider's NPPES record last updated: August 7, 2026
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1326787755
- Primary Specialty
- Family Medicine
- Practice Location
- Sun Prairie, Wisconsin
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 20, 2026, 3:17 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Family Medicine
Allopathic & Osteopathic Physicians
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Taxonomy code 207Q00000X Psychiatry & Neurology
Addiction Medicine
Allopathic & Osteopathic Physicians
A doctor of osteopathy board eligible/certified in the field of Psychiatry by the American Osteopathic Board of Neurology and Psychiatry is able to obtain a Certificate of Added Qualifications in the field of Addiction Medicine
Taxonomy code 2084A0401X
Provider-Reported License Information
- Family Medicine (Wisconsin)
- 85401
- Psychiatry & Neurology (Wisconsin)
- 85401-20
Practice Locations
Practice Location
2651 Windsor St
Sun Prairie, Wisconsin 53590-9825
Phone: (608) 837-2206
Additional Practice Location
4602 Eastpark Blvd
Madison, Wisconsin 53718-2002
Phone: (608) 263-6400
Fax: (608) 262-6743
Additional Practice Location
600 Highland Ave
Madison, Wisconsin 53792-0001
Phone: (608) 262-2919
Additional Practice Location
7102 Mineral Point Rd
Madison, Wisconsin 53717-1706
Phone: (608) 828-7676
Additional Practice Location
2402 Winnebago St
Madison, Wisconsin 53704-5341
Phone: (608) 828-7603
Fax: (608) 242-6848
Record Information
- Enumeration Date
- June 2, 2022
- Provider's NPPES Record Last Updated
- August 7, 2026
- Certification Date
- August 7, 2026
- NPISignal NPPES Dataset
- August 2026
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