Roy Mack Greenway Jr., MD, FACS
NPI 1639219108ActiveIndividual· Surgery· Oklahoma City, OK
Surgery (MD, FACS) in Oklahoma City, Oklahoma, trained at University of Oklahoma College of Medicine (class of 2004). 75 Medicare patients in 2024, $30,126 paid; nearly all of their 138 Part D prescriptions were generic (91%). Boston Scientific Corporation reported $171.96 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1639219108 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, FACS |
| Sole proprietor | No |
| NPI issued | Feb 7, 2007 |
| Last updated in NPPES | Nov 11, 2022 |
| Certified by provider | Sep 1, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 23986 | OK |
| Orthopaedic Surgery | 207X00000X | 23986 | OK |
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 - General Surgery (OK); Practitioner - General Surgery (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 75 |
|---|---|
| Services billed | 166 across 49 procedure codes |
| Paid by Medicare | $30,126 |
Part D prescriptions in 2024
| Prescriptions (claims) | 138 · 184 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $7,208 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | General Surgery |
Medical group
- Chickasaw Nation Division of Health Chickasaw Nation Medical CenterAda, OK · 240 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$171.96 · 3 payments from 1 company
- 2024$1,551 · 14 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $171.96 | 3 |
What the 2025 payments were for
- Food and Beverage$171.96 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 159 general surgeons in Oklahoma City · All general surgeons in Oklahoma