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General Surgery

Brenna A. Fanning, MD

Works at hospitals in Billings, MT · Butte, MT · Montana

Summary

Dr. Brenna A. Fanning, MD is a general surgeon at 435 S Crystal St, 200 Imh Butte Clinic General Surgery, Butte, MT 59701. Phone: (406) 496-3480. Accepts Medicare assignment. In 2024, Brenna A. Fanning had 29 Original Medicare patients and 55 services. NPI 1235698093. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: General surgeon (Medicare lists General Surgery)
  • Address: 435 S Crystal St, 200 Imh Butte Clinic General Surgery, Butte, MT 59701 · Directions
  • Phone: (406) 496‑3480
  • Medicare: Accepts Medicare assignment
  • Hospitals: Intermountain Health St Vincent Regional Hospital, St James Hospital
  • Group practice: SCL Health Medical Group-Butte LLC
  • Medical school: University Of North Dakota School Of Medicine · graduated 2019 (7 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Brenna A. Fanning, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Brenna A. Fanning accept Medicare assignment?
Yes. Medicare's clinician data says Brenna A. Fanning accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Brenna A. Fanning see?
In 2024, CMS data shows 29 Original Medicare patients and 55 services for Brenna A. Fanning. This counts Original Medicare only and measures volume, not quality.
What is Brenna A. Fanning's NPI number?
1235698093. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Brenna A. Fanning, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients29
Services billed to Medicare55
Different services or procedures26
Participating Medicare providerYes
Average age of these patients72

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure62%
  • High cholesterol48%

Hospitals where Brenna A. Fanning works

Medicare's Facility Affiliation Data lists Brenna A. Fanning at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Brenna A. Fanning is enrolled with Medicare (CMS data updated October 2, 2026).

  • 435 S Crystal St, 200 Imh Butte Clinic General SurgeryButte, MT 59701 (406) 496‑3480

Group practices

Medicare enrollment lists Brenna A. Fanning as a member of this group (CMS data updated October 2, 2026).

  • SCL Health Medical Group-Butte LLC100 clinicians in the group

Specialties

Find other General Surgery doctors in Montana →

Other general surgeons in Montana

Clinicians with the same Medicare primary specialty in Montana — not a recommendation.

All general surgeons in Montana →

Other clinicians in SCL Health Medical Group-Butte LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of North Dakota School Of Medicine
Graduation year2019 (7 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1235698093
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians