Gregory W. Walker, D.O.
NPI 1134307978ActiveIndividual· Surgery, Vascular Surgery· Toledo, OH
Surgery, Vascular Surgery (D.O.) with Promedica Multi Specialty Physicians, practicing in Toledo, Ohio. In 2024 Medicare paid $139,506 for 1,162 patients, and Part D covered 415 of their prescriptions, 83% of them generic. Medtronic, Inc. was the largest of 2 companies reporting payments in 2025, $521.01 in all, mostly food and beverage. Lists Bay Park Community Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1134307978 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Feb 4, 2008 |
| Last updated in NPPES | Nov 3, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | 34.008756 | OH |
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 - Vascular Surgery (MI); Practitioner - Vascular Surgery (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,162 |
|---|---|
| Services billed | 1,696 across 96 procedure codes |
| Paid by Medicare | $139,506 |
Part D prescriptions in 2024
| Prescriptions (claims) | 415 · 800 30-day fills |
|---|---|
| Patients | 103 |
| Total drug cost | $55,338 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Vascular Surgery |
Medical group
- Promedica Multi Specialty PhysiciansToledo, OH · 270 clinicians
Hospital affiliations
- Bay Park Community HospitalOregon, OH
- Memorial HospitalFremont, OH
- Promedica Monroe Regional HospitalMonroe, MI
- Promedica Toledo HospitalToledo, OH
- Wood County HospitalBowling Green, OH
Industry payments (Open Payments)
- 2025$521.01 · 11 payments from 2 companies
- 2024$512.43 · 14 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $450.72 | 8 |
| Mozarc Medical US LLC | $70.29 | 3 |
What the 2025 payments were for
- Food and Beverage$521.01 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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