Quick answers
- Which hospitals does Leon Rosen work at?
- Medicare's official clinician data lists Leon Rosen at 5 hospitals: Ascension All Saints Hospital, Aurora Medical Center - Summit, McLeod Loris Hospital, Northwest Health - Porter and Northwest Health-La Porte. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Leon Rosen see patients?
- Medicare's clinician data lists 6 practice locations, including Knox, IN, La Porte, IN and Wauwatosa, WI. Call before your visit to confirm the address.
- What is Leon Rosen's specialty?
- Medicare lists Interventional Cardiology as the primary specialty.
- Does Leon Rosen accept Medicare assignment?
- Yes. Medicare's clinician data says Leon Rosen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Leon Rosen?
- (414) 259-7361, as listed in official Medicare / NPI Registry data.
- What is Leon Rosen's NPI number?
- 1477661437. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Leon Rosen works
Medicare's Facility Affiliation Data lists Leon Rosen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension All Saints HospitalRacine, WI · Acute Care Hospital · CCN 520096
- Aurora Medical Center - SummitSummit, WI · Acute Care Hospital · CCN 520206
- McLeod Loris HospitalLoris, SC · Acute Care Hospital · CCN 420105
- Northwest Health - PorterValparaiso, IN · Acute Care Hospital · CCN 150035
- Northwest Health-La PorteLa Porte, IN · Acute Care Hospital · CCN 150006
Practice locations
Addresses where Leon Rosen is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 104 E Culver RdKnox, IN 46534
- 1331 State StLa Porte, IN 46350
- 201 N Mayfair RdWauwatosa, WI 53226 (414) 259‑7361
- 3485 Mitchell StLoris, SC 29569 (843) 756‑7029
- 3793 McDowell Ln, Suite 200Little River, SC 29566 (843) 390‑0877
Group practices
Medicare enrollment lists Leon Rosen as a member of these groups (CMS data updated 2026-10-02).
- Ascension Medical Group-Southeast Wisconsin Inc545 clinicians in the group
- McLeod Regional Medical Center of the Pee Dee Inc406 clinicians in the group
- Porter Physician Services LLC99 clinicians in the group
- La Porte Clinic Company LLC69 clinicians in the group
Specialties
- Interventional Cardiologyprimary
Other interventional cardiologists in Knox
Clinicians with the same Medicare primary specialty in Knox, IN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477661437 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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