Mark Andrew Welnick, M.D.
NPI 1255698221ActiveIndividual· Radiology, Diagnostic Radiology· Green Bay, WI
Radiology, Diagnostic Radiology (M.D.) in Green Bay, Wisconsin, trained at University of Wisconsin School of Medicine (class of 2012). 607 Medicare patients in 2024, $77,506 paid; nearly all of their 77 Part D prescriptions were generic (99%). Penumbra, Inc. was the largest of 7 companies reporting payments in 2025, $7,279 in all, mostly speaking and faculty fees.
Overview
| NPI | 1255698221 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 16, 2012 |
| Last updated in NPPES | Aug 28, 2025 |
| Certified by provider | Aug 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Diagnostic Radiology Primary | 2085R0202X | 66995-20 | WI |
| Radiology, Diagnostic Radiology | 2085R0202X | 63777 | MN |
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 - Interventional Radiology (MI); Practitioner - Diagnostic Radiology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 607 |
|---|---|
| Services billed | 1,688 across 151 procedure codes |
| Paid by Medicare | $77,506 |
Part D prescriptions in 2024
| Prescriptions (claims) | 77 · 120 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $1,308 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Diagnostic Radiology |
| Secondary specialties | Interventional Radiology |
Medical groups
- Osf Multi-Specialty GroupMorton, IL · 2,114 clinicians
- Bellin Memorial Hospital IncGreen Bay, WI · 697 clinicians
- Baycare Aurora LLCGreen Bay, WI · 194 clinicians
- St Francis HospitalEscanaba, MI · 86 clinicians
Hospital affiliations
- Aurora Baycare Medical CtrGreen Bay, WI
- Bellin Health Oconto HospitalOconto, WI
- Bellin Memorial HospitalGreen Bay, WI
- Dickinson County Memorial HospitalIron Mountain, MI
- Osf St Francis Hospital and Medical GroupEscanaba, MI
Industry payments (Open Payments)
- 2025$7,279 · 21 payments from 7 companies
- 2024$8,397 · 30 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Penumbra, Inc. | $6,716 | 11 |
| Boston Scientific Corporation | $259.35 | 3 |
| Stryker Corporation | $112.73 | 2 |
| W. L. Gore & Associates, Inc. | $99.78 | 1 |
| Surmodics, Inc. | $46.76 | 2 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$3,600 · 1 payment
- Travel and Lodging$1,933 · 2 payments
- Food and Beverage$1,746 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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