Mark A. Ziemba, MD
NPI 1942333810ActiveIndividual· Radiology, Diagnostic Radiology· Eden Prairie, MN
Radiology, Diagnostic Radiology (MD) in Eden Prairie, Minnesota, trained at University of Southern California Keck School of Medicine (class of 1990). Mostly services rather than prescriptions: Medicare paid $226,793 for 5,549 patients in 2024, with only 34 Part D claims. Merit Medical Systems Inc reported $15.38 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1942333810 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 13, 2007 |
| Last updated in NPPES | Sep 12, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Diagnostic Radiology Primary | 2085R0202X | G72213 | CA |
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 - Diagnostic Radiology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 5,549 |
|---|---|
| Services billed | 9,446 across 179 procedure codes |
| Paid by Medicare | $226,793 |
Part D prescriptions in 2024
| Prescriptions (claims) | 34 · 34 30-day fills |
|---|---|
| Patients | 32 |
| Total drug cost | $58.22 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Diagnostic Radiology |
Medical group
- Radiology Associates of San Luis Obispo A Medical Group IncTulsa, OK · 59 clinicians
Hospital affiliations
- Adventist Health Sierra VistaSan Luis Obispo, CA
- French Hospital Medical CenterSan Luis Obispo, CA
- Marian Regional Medical CenterSanta Maria, CA
Industry payments (Open Payments)
- 2025$15.38 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merit Medical Systems Inc | $15.38 | 1 |
What the 2025 payments were for
- Food and Beverage$15.38 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 200 diagnostic radiologists in Eden Prairie · All diagnostic radiologists in Minnesota