Maxwell Butler, MD
NPI 1326787755 · Family Medicine Physician · Madison, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maxwell Butler, MD is a Family Medicine Physician provider in Madison, WI (NPI 1326787755).
Provider details
- NPI number
- 1326787755
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 85401 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 77 | 18 |
| Atorvastatin Calcium | 64 | 23 |
| Metformin Hcl | 38 | — |
| Hydrochlorothiazide | 36 | 11 |
| Gabapentin | 34 | — |
| Lisinopril | 34 | 11 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-06-02
- Last updated
- 2025-07-23
- Certified
- 2025-07-23
Frequently asked questions
- What is Maxwell Butler's NPI number?
- Maxwell Butler's National Provider Identifier (NPI) is 1326787755, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maxwell Butler's specialty?
- Maxwell Butler is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maxwell Butler located?
- Maxwell Butler's practice location on file with NPPES is 2402 Winnebago St, Madison, WI 53704-5341.
- What is Maxwell Butler's phone number?
- The practice phone number listed in the NPPES registry for Maxwell Butler is (608) 828-7603.
- Does Maxwell Butler accept Medicare?
- Maxwell Butler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maxwell Butler's NPI active?
- Yes — Maxwell Butler's NPI (1326787755) is active in the NPPES registry as of the last update on 2025-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.