Mark-Victor Siwoski
NPI 1619363645ActiveIndividual· Psychiatry & Neurology, Neurology· Kalamazoo, MI
Psychiatry & Neurology, Neurology with Bronson Methodist Hospital and 1 other group, practicing in Kalamazoo, Michigan. Their prescriptions cost Medicare Part D more than their services did: $633,969 for 1,726 claims, against $32,515 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 7 companies reporting payments in 2025, $259.59 in all, mostly food and beverage. Lists Bronson Battle Creek Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1619363645 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 7, 2015 |
| Last updated in NPPES | Jan 6, 2021 |
| Certified by provider | Jan 6, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 4301503605 | MI |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Neurology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 234 |
|---|---|
| Services billed | 540 across 23 procedure codes |
| Paid by Medicare | $32,515 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,726 · 2,790 30-day fills |
|---|---|
| Patients | 299 |
| Total drug cost | $633,969 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Neurology |
Medical groups
- Bronson Methodist HospitalKalamazoo, MI · 729 clinicians
- Bronson Battle Creek HospitalBattle Creek, MI · 193 clinicians
Hospital affiliations
- Bronson Battle Creek HospitalBattle Creek, MI
- Bronson Lakeview HospitalPaw Paw, MI
- Bronson Methodist HospitalKalamazoo, MI
- Lakeland Hospital, St JosephSt Joseph, MI
Industry payments (Open Payments)
- 2025$259.59 · 10 payments from 7 companies
- 2024$77.67 · 4 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $58.31 | 2 |
| Neurelis, Inc. | $51.76 | 2 |
| Sk Life Science, Inc. | $47.61 | 2 |
| Livanova USA, Inc. | $34.73 | 1 |
| Ucb, Inc. | $26.00 | 1 |
What the 2025 payments were for
- Food and Beverage$259.59 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other neurologists in Kalamazoo
- 1033173794
- 1073831681
- 1164959482
- 1396709523
- 1457611956
- 1710411509
- 1801060397
- 1831179407
- 1043410384
- 1366405490
- 1477904332
- 1124075957
All 17 neurologists in Kalamazoo · All neurologists in Michigan