Gregory J. Oakhill, M.D.
NPI 1356312466ActiveIndividual· Internal Medicine, Hematology & Oncology· Fayetteville, AR
Internal Medicine, Hematology & Oncology (M.D.) in Fayetteville, Arkansas, trained at Medical University of South Carolina College of Medicine (class of 1994). In 2024 Medicare paid $5,486,912 for 1,509 patients, and Part D covered 2,669 of their prescriptions, 80% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 30 companies reporting payments in 2025, $1,631 in all, mostly food and beverage.
Overview
| NPI | 1356312466 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 27, 2006 |
| Last updated in NPPES | Jul 6, 2026 |
| Certified by provider | Jul 6, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | E2513 | AR |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 18089 | SC |
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 - Hematology/Oncology (AR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,509 |
|---|---|
| Services billed | 370,124 across 326 procedure codes |
| Paid by Medicare | $5,486,912 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,669 · 3,705 30-day fills |
|---|---|
| Patients | 478 |
| Total drug cost | $3,041,246 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Highlands Oncology Group PAMountain Home, AR · 84 clinicians
Hospital affiliations
- Baxter HealthMountain Home, AR
- Mercy Hospital Northwest ArkansasRogers, AR
- Northwest Medical Center-SpringdaleSpringdale, AR
- Washington Regional Medical CenterFayetteville, AR
Other facilities
- Elite Home HealthHome health agency · Springdale, AR
Industry payments (Open Payments)
- 2025$1,631 · 87 payments from 30 companies
- 2024$1,597 · 88 payments from 32 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $382.05 | 23 |
| Merck Sharp & Dohme LLC | $162.05 | 8 |
| Sanofi US Services Inc. | $121.20 | 1 |
| Daiichi Sankyo Inc. | $91.42 | 4 |
| Jazz Pharmaceuticals Inc. | $76.91 | 5 |
What the 2025 payments were for
- Food and Beverage$1,537 · 85 payments
- Education$94.19 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Hematology & Oncology providers in Arkansas →