Leon Besthoff Rosen, M.D.
NPI 1477661437ActiveIndividual· Internal Medicine, Interventional Cardiology· Milwaukee, WI
Internal Medicine, Interventional Cardiology (M.D.) with Ascension Medical Group-Southeast Wisconsin Inc and 3 other groups, practicing in Milwaukee, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $28,466 for 221 claims, against $5,169 paid for services in 2024. Abiomed reported $89.74 in payments in 2025, mostly food and beverage. Lists Ascension All Saints Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1477661437 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 29, 2006 |
| Last updated in NPPES | Aug 8, 2025 |
| Certified by provider | Aug 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | 036157971 | IL |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 26467 | WI |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 036157971 | IL |
| Internal Medicine, Interventional Cardiology | 207RI0011X | 26467 | WI |
| Nuclear Medicine, Nuclear Cardiology | 207UN0901X | 26467 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Interventional Cardiology (IL); Practitioner - Interventional Cardiology (IN); Practitioner - Cardiovascular Disease (Cardiology) (SC); Practitioner - Cardiovascular Disease (Cardiology) (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 220 |
|---|---|
| Services billed | 295 across 10 procedure codes |
| Paid by Medicare | $5,169 |
Part D prescriptions in 2024
| Prescriptions (claims) | 221 · 478 30-day fills |
|---|---|
| Patients | 70 |
| Total drug cost | $28,466 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Interventional Cardiology |
Medical groups
- Ascension Medical Group-Southeast Wisconsin IncBrookfield, WI · 545 clinicians
- McLeod Regional Medical Center of the Pee Dee IncMyrtle Beach, SC · 406 clinicians
- Porter Physician Services LLCValparaiso, IN · 99 clinicians
- La Porte Clinic Company LLCKnox, IN · 69 clinicians
Hospital affiliations
- Ascension All Saints HospitalRacine, WI
- Aurora Medical Center - SummitSummit, WI
- McLeod Loris HospitalLoris, SC
- Northwest Health - PorterValparaiso, IN
- Northwest Health-La PorteLa Porte, IN
Industry payments (Open Payments)
- 2025$89.74 · 1 payment from 1 company
- 2024$52.71 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $89.74 | 1 |
What the 2025 payments were for
- Food and Beverage$89.74 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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