Jaroslaw P. Siwik, MD
NPI 1043280522ActiveIndividual· Internal Medicine· Portage, MI
Internal Medicine (MD) in Portage, Michigan, trained at Wayne State University School of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $1,056,616 for 9,552 claims, against $38,563 paid for services in 2024. Lilly USA, LLC was the largest of 8 companies reporting payments in 2024, $221.01 in all, mostly food and beverage.
Overview
| NPI | 1043280522 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 25, 2006 |
| Last updated in NPPES | Nov 27, 2023 |
| Certified by provider | Oct 12, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4301070284 | MI |
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 - Internal Medicine (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 190 |
|---|---|
| Services billed | 644 across 23 procedure codes |
| Paid by Medicare | $38,563 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,552 · 20,145 30-day fills |
|---|---|
| Patients | 658 |
| Total drug cost | $1,056,616 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Bronson Methodist HospitalKalamazoo, MI · 729 clinicians
Hospital affiliations
- Bronson Battle Creek HospitalBattle Creek, MI
- Bronson Lakeview HospitalPaw Paw, MI
- Bronson Methodist HospitalKalamazoo, MI
Other facilities
- Bronson at Home Healthcare ServicesHome health agency · Battle Creek, MI
Industry payments (Open Payments)
- 2024$221.01 · 10 payments from 8 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $57.44 | 3 |
| Inspire Medical Systems, Inc. | $41.10 | 1 |
| Merck Sharp & Dohme LLC | $30.67 | 1 |
| Abbvie Inc. | $22.40 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $19.12 | 1 |
What the 2024 payments were for
- Food and Beverage$221.01 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 24 internal medicine physicians in Portage · All internal medicine physicians in Michigan