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

Nurse Practitioner

Marina Horschak

Sees patients in Wauwatosa, WI · West Bend, WI · Germantown, WI · Wisconsin

Summary

Marina Horschak is a nurse practitioner at 1155 N Mayfair Rd, Wauwatosa, WI 53226. Phone: (414) 955-5990. Accepts Medicare assignment. NPI 1134548274. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Nurse practitioner
  • Address: 1155 N Mayfair Rd, Wauwatosa, WI 53226 · Directions (2 more locations)
  • Phone: (414) 955‑5990
  • Medicare: Accepts Medicare assignment
  • Group practice: Froedtert Andthe Medical College of Wisconsin Community Physicians Inc
  • School: graduated 2013
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Marina Horschak, 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 Marina Horschak accept Medicare assignment?
Yes. Medicare's clinician data says Marina Horschak 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 Marina Horschak's NPI number?
1134548274. 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 Marina Horschak is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Froedtert Andthe Medical College of Wisconsin Community Physicians Inc1,285 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, Wisconsin →

Other nurse practitioners in Wauwatosa

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

All nurse practitioners in Wauwatosa →

Other clinicians in Froedtert Andthe Medical College of Wisconsin Community Physicians Inc

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

Clinician information

Graduation year2013
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1134548274
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