Miroslaw A. Mazurczak, M.D.
NPI 1437155140ActiveIndividual· Internal Medicine, Hematology & Oncology· Sioux Falls, SD
Internal Medicine, Hematology & Oncology (M.D.) with Sanford Medical Center and 1 other group, practicing in Sioux Falls, South Dakota. Their prescriptions cost Medicare Part D more than their services did: $1,240,570 for 971 claims, against $48,830 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 2 companies reporting payments in 2025, $63.13 in all, mostly food and beverage. Lists Sanford Canby Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1437155140 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 27, 2005 |
| Last updated in NPPES | Mar 25, 2022 |
| Certified by provider | Mar 25, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 4451 | SD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Medical Oncology (MN); Practitioner - Medical Oncology (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 343 |
|---|---|
| Services billed | 676 across 16 procedure codes |
| Paid by Medicare | $48,830 |
Part D prescriptions in 2024
| Prescriptions (claims) | 971 · 1,427 30-day fills |
|---|---|
| Patients | 210 |
| Total drug cost | $1,240,570 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology/Oncology, Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Sanford Medical CenterSioux Falls, SD · 857 clinicians
- Sanford Health NetworkTracy, MN · 351 clinicians
Hospital affiliations
- Sanford Canby Medical CenterCanby, MN
- Sanford Jackson Medical CenterJackson, MN
- Sanford Sheldon Medical CenterSheldon, IA
- Sanford Usd Medical CenterSioux Falls, SD
- Sanford Worthington Medical CenterWorthington, MN
Industry payments (Open Payments)
- 2025$63.13 · 2 payments from 2 companies
- 2024$290.93 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $40.74 | 1 |
| Eisai Inc. | $22.39 | 1 |
What the 2025 payments were for
- Food and Beverage$63.13 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Hematology & Oncology providers in South Dakota →