Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Family Practice

Michelle M. Kosmalski, MD

Sees patients in Oak Creek, WI · Milwaukee, WI · West Allis, WI · Wisconsin

Summary

Dr. Michelle M. Kosmalski, MD is a family doctor at 200 E Ryan Rd, Oak Creek, WI 53154. Phone: (414) 570-3590. Accepts Medicare assignment. NPI 1427491992. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 200 E Ryan Rd, Oak Creek, WI 53154 · Directions (2 more locations)
  • Phone: (414) 570‑3590
  • Medicare: Accepts Medicare assignment
  • Group practice: Aurora Medical Group, Inc. (+2 more)
  • Medical school: University Of Wisconsin School Of Medicine · graduated 2013 (13 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Michelle M. Kosmalski, 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 Michelle M. Kosmalski accept Medicare assignment?
Yes. Medicare's clinician data says Michelle M. Kosmalski 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.
What is Michelle M. Kosmalski's NPI number?
1427491992. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Michelle M. Kosmalski is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Michelle M. Kosmalski as a member of these groups (CMS data updated October 2, 2026).

  • Aurora Medical Group, Inc.3,813 clinicians in the group
  • Aurora Advanced Healthcare, Inc.1,124 clinicians in the group
  • Lakeshore Medical Clinic LLC379 clinicians in the group

Specialties

Find other Family Practice doctors in Wisconsin →

Other family doctors in Oak Creek

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

All family doctors in Oak Creek →

Other clinicians in Aurora Medical Group, Inc.

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

Clinician information

CredentialMD
Medical schoolUniversity Of Wisconsin School Of Medicine
Graduation year2013 (13 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1427491992
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians