Marshall K. Walker, M.D.
NPI 1619295441ActiveIndividual· Radiology, Vascular & Interventional Radiology· Mobile, AL
Radiology, Vascular & Interventional Radiology (M.D.) in Mobile, Alabama, trained at Tulane University School of Medicine (class of 2010). 1,510 Medicare patients in 2024, $79,162 paid; nearly all of their 1,327 Part D prescriptions were generic (98%). Route 92 Medical, Inc. reported $124.95 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1619295441 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 4, 2010 |
| Last updated in NPPES | Nov 21, 2025 |
| Certified by provider | Nov 21, 2025 |
Specialties and licenses
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 (AL); Practitioner - Diagnostic Radiology (FL); Practitioner - Diagnostic Radiology (MS); Practitioner - Diagnostic Radiology (MT); Practitioner - Diagnostic Radiology (NC); Practitioner - Diagnostic Radiology (NV); Practitioner - Diagnostic Radiology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,510 |
|---|---|
| Services billed | 4,106 across 185 procedure codes |
| Paid by Medicare | $79,162 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,327 · 1,371 30-day fills |
|---|---|
| Patients | 274 |
| Total drug cost | $40,893 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Tulane University School of Medicine |
|---|---|
| Graduation year | 2010 |
| Medicare specialty | Diagnostic Radiology |
Medical groups
- Radiology Imaging Specialists LLCOcala, FL · 17 clinicians
- Mobile Open MRI LLCMobile, AL · 3 clinicians
Industry payments (Open Payments)
- 2025$124.95 · 1 payment from 1 company
- 2024$259.22 · 10 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Route 92 Medical, Inc. | $124.95 | 1 |
What the 2025 payments were for
- Food and Beverage$124.95 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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