Quick answers
- Does Roselyn M. Cantwil accept Medicare assignment?
- Yes. Medicare's clinician data says Roselyn M. Cantwil 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 Roselyn M. Cantwil see?
- In 2024, CMS data shows 76 Original Medicare patients and 79 services for Roselyn M. Cantwil. This counts Original Medicare only and measures volume, not quality.
- What is Roselyn M. Cantwil's NPI number?
- 1669190708. 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 Roselyn M. Cantwil, 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 | 76 |
|---|---|
| Services billed to Medicare | 79 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 67 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)27 services
- Emergency department visit with high level of medical decision making (99285)24 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 cholesterol64%
- Anxiety42%
- Arthritis38%
- Depression38%
- Diabetes29%
Hospitals where Roselyn M. Cantwil works
Medicare's Facility Affiliation Data lists Roselyn M. Cantwil 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.
- Ascension All Saints HospitalRacine, WI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 520096
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520051
Practice locations
Addresses where Roselyn M. Cantwil is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 201 N Mayfair RdWauwatosa, WI 53226 (414) 259‑7200
- 2301 N Lake DrMilwaukee, WI 53211 (414) 291‑1000
- 3237 S 16th StMilwaukee, WI 53215 (414) 647‑5000
- 3801 Spring StMount Pleasant, WI 53405 (262) 687‑4011
- 3807 Spring StMount Pleasant, WI 53405 (262) 687‑8173
Group practices
Medicare enrollment lists Roselyn M. Cantwil as a member of this group (CMS data updated October 2, 2026).
- Emergency Medicine Specialists SC227 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Wauwatosa
Clinicians with the same Medicare primary specialty in Wauwatosa, WI — not a recommendation.
Other clinicians in Emergency Medicine Specialists SC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2022 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669190708 |
| 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