Jonas Mieczyslaw Kwiatkowski, MD
NPI 1346796646ActiveIndividual· Hospitalist· Mason City, IA
Hospitalist (MD) with Legacy Clinics LLC and 1 other group, practicing in Mason City, Iowa. 404 Medicare patients in 2024, $126,455 paid; nearly all of their 392 Part D prescriptions were generic (94%). Lists Legacy Emanuel Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1346796646 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 28, 2016 |
| Last updated in NPPES | Nov 3, 2025 |
| Certified by provider | Nov 3, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | MD-46838 | IA |
| Internal Medicine | 207R00000X | MD227509 | OR |
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 (IA); Practitioner - Internal Medicine (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 404 |
|---|---|
| Services billed | 1,506 across 7 procedure codes |
| Paid by Medicare | $126,455 |
Part D prescriptions in 2024
| Prescriptions (claims) | 392 · 396 30-day fills |
|---|---|
| Patients | 168 |
| Total drug cost | $13,624 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Legacy Clinics LLCPortland, OR · 713 clinicians
- Cogent Healthcare of Iowa PCMason City, IA · 61 clinicians
Hospital affiliations
- Legacy Emanuel Medical CenterPortland, OR
- Legacy Good Samaritan Medical CenterPortland, OR
- Mercyone North Iowa Medical CenterMason City, IA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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