Quick answers
- Does Steven L. Peterson accept Medicare assignment?
- Yes. Medicare's clinician data says Steven L. Peterson 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 Steven L. Peterson see?
- In 2024, CMS data shows 1,114 Original Medicare patients and 2,563 services for Steven L. Peterson. This counts Original Medicare only and measures volume, not quality.
- What is Steven L. Peterson's NPI number?
- 1942401146. 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 Steven L. Peterson, 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 patients | 1,114 |
|---|---|
| Services billed to Medicare | 2,563 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Outpatient heart rehabilitation with electrocardiogram (ecg) monitoring, quality health care professional services (93798)857 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)527 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)265 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)161 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)80 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 cholesterol75%
- Ischemic heart disease49%
- Arthritis47%
- Chronic kidney disease34%
- Heart failure34%
Hospitals where Steven L. Peterson works
Medicare's Facility Affiliation Data lists Steven L. Peterson 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.
- 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. Peterson is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 14; the Medicare profile lists all.
- 1155 N Mayfair RdWauwatosa, WI 53226 (414) 955‑5990
- 1155 N Mayfair Rd, Fl 2Milwaukee, WI 53226 (414) 955‑4263
- 1271 N 6th StMilwaukee, WI 53212 (414) 978‑9100
- 1905 N Calhoun RdBrookfield, WI 53005
- 3200 Pleasant Valley RdWest Bend, WI 53095 (262) 836‑7300
Group practices
Medicare enrollment lists Steven L. Peterson 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
Find other Cardiovascular Disease (Cardiology) doctors in Wisconsin →
Other cardiologists in Wauwatosa
Clinicians with the same Medicare primary specialty in Wauwatosa, 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 | MD |
|---|---|
| Medical school | George Washington University School Of Medicine |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942401146 |
| 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
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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