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Emergency Medicine

Mary Bozsik, MD

Works at hospitals in New Berlin, WI · West Bend, WI · Wisconsin

Summary

Dr. Mary Bozsik, MD is an emergency medicine doctor at 3200 Pleasant Valley Rd, West Bend, WI 53095. Phone: (262) 836-7300. Accepts Medicare assignment. In 2024, Mary Bozsik had 115 Original Medicare patients and 177 services. NPI 1639758824. 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: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 3200 Pleasant Valley Rd, West Bend, WI 53095 · Directions (3 more locations)
  • Phone: (262) 836‑7300
  • Medicare: Accepts Medicare assignment
  • Hospitals: Froedtert Community Hospital, St Josephs Community Hospital West Bend
  • Group practice: The Medical College of Wisconsin Inc
  • Medical school: University Of Toledo College Of Medicine · graduated 2021 (5 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Mary Bozsik, 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 Mary Bozsik accept Medicare assignment?
Yes. Medicare's clinician data says Mary Bozsik 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 Mary Bozsik see?
In 2024, CMS data shows 115 Original Medicare patients and 177 services for Mary Bozsik. This counts Original Medicare only and measures volume, not quality.
What is Mary Bozsik's NPI number?
1639758824. 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 Mary Bozsik, 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 patients115
Services billed to Medicare177
Different services or procedures8
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)62 services
  2. Emergency department visit with moderate level of medical decision making (99284)51 services
  3. Emergency department visit with high level of medical decision making (99285)51 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 cholesterol71%
  • Arthritis60%
  • Depression40%
  • Anxiety38%
  • Ischemic heart disease37%

Hospitals where Mary Bozsik works

Medicare's Facility Affiliation Data lists Mary Bozsik 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 Mary Bozsik is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mary Bozsik as a member of this group (CMS data updated October 2, 2026).

  • The Medical College of Wisconsin Inc2,115 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Wisconsin →

Other emergency medicine doctors in West Bend

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

All emergency medicine doctors in West Bend →

Other clinicians in The Medical College of Wisconsin Inc

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

Clinician information

CredentialMD
Medical schoolUniversity Of Toledo College Of Medicine
Graduation year2021 (5 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1639758824
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