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Internal Medicine

Brianna L. Bobber, DO

Works at hospitals in Grafton, WI · Hartford, WI · Wisconsin

Summary

Dr. Brianna L. Bobber, DO is an internal medicine doctor at 1640 E Sumner St, Hartford, WI 53027. Phone: (262) 670-4000. Accepts Medicare assignment. In 2024, Brianna L. Bobber had 78 Original Medicare patients and 272 services. NPI 1235792664. 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: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1640 E Sumner St, Hartford, WI 53027 · Directions
  • Phone: (262) 670‑4000
  • Medicare: Accepts Medicare assignment
  • Hospitals: Aurora Medical Center, Aurora Medical Center Washington County
  • Group practice: Aurora Advanced Healthcare, Inc.
  • Medical school: Liberty Univ College Of Osteopathic 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 Brianna L. Bobber, 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 Brianna L. Bobber accept Medicare assignment?
Yes. Medicare's clinician data says Brianna L. Bobber 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 Brianna L. Bobber see?
In 2024, CMS data shows 78 Original Medicare patients and 272 services for Brianna L. Bobber. This counts Original Medicare only and measures volume, not quality.
What is Brianna L. Bobber's NPI number?
1235792664. 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 Brianna L. Bobber, 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 patients78
Services billed to Medicare272
Different services or procedures32
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)113 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)19 services
  3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)16 services
  4. Influenza vaccine split virus, preservative free (90662)15 services
  5. Administration of influenza virus vaccine (G0008)15 services

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 pressure75%
  • High cholesterol69%
  • Arthritis56%
  • Ischemic heart disease33%
  • Chronic kidney disease29%
  • Depression27%

Hospitals where Brianna L. Bobber works

Medicare's Facility Affiliation Data lists Brianna L. Bobber 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.

  • Aurora Medical CenterGrafton, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520207
  • Aurora Medical Center Washington CountyHartford, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520038

Practice locations

Addresses where Brianna L. Bobber is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Brianna L. Bobber as a member of this group (CMS data updated October 2, 2026).

  • Aurora Advanced Healthcare, Inc.1,124 clinicians in the group

Specialties

Find other Internal Medicine doctors in Wisconsin →

Other internal medicine doctors in Hartford

Clinicians with the same Medicare primary specialty in Hartford, WI — not a recommendation.

All internal medicine doctors in Hartford →

Other clinicians in Aurora Advanced Healthcare, Inc.

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

Clinician information

CredentialDO
Medical schoolLiberty Univ College Of Osteopathic Medicine
Graduation year2019 (7 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1235792664
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