Quick answers
- Does Steven L. Marmer accept Medicare assignment?
- Yes. Medicare's clinician data says Steven L. Marmer 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 Steven L. Marmer's NPI number?
- 1811457518. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Steven L. Marmer works
Medicare's Facility Affiliation Data lists Steven L. Marmer 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.
- Community Memorial HospitalMenomonee Falls, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520103
- Froedtert Community HospitalNew Berlin, WI · Acute Care Hospital · Emergency services: listed by Medicare · CCN 520213
- Froedtert Memorial Lutheran HospitalMilwaukee, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520177
- St Josephs Community Hospital West BendWest Bend, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520063
Practice locations
Addresses where Steven L. Marmer is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 19; the Medicare profile lists all.
- 11211 W Lincoln AveWest Allis, WI 53227 (414) 456‑5900
- 1155 N Mayfair RdWauwatosa, WI 53226 (414) 955‑5990
- 16650 W Bluemound Rd, Suite 200Brookfield, WI 53005 (262) 827‑9200
- 1905 N Calhoun RdBrookfield, WI 53005
- 21700 Intertech DrBrookfield, WI 53045 (262) 532‑8300
Group practices
Medicare enrollment lists Steven L. Marmer as a member of these groups (CMS data updated October 2, 2026).
- The Medical College of Wisconsin Inc2,115 clinicians in the group
- Froedtert Andthe Medical College of Wisconsin Community Physicians Inc1,285 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in West Allis
Clinicians with the same Medicare primary specialty in West Allis, WI — not a recommendation.
Other clinicians in The Medical College of Wisconsin Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Des Moines University Of Osteopathic Medicine And Health Sciences |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811457518 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians