Alaba Abiodun Onasanya, M.D
NPI 1891896031ActiveIndividual· Internal Medicine· Rock Hill, SC
Internal Medicine (M.D) with Oak Street Health Physicians Group of South Carolina LLC, practicing in Rock Hill, South Carolina. Part D covered 219 prescriptions written in 2024, 100% of them generic. Exact Sciences Corporation was the largest of 2 companies reporting payments in 2025, $46.37 in all, mostly food and beverage. Lists Piedmont Medical Center as a hospital affiliation.
Overview
| NPI | 1891896031 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | No |
| NPI issued | Sep 26, 2006 |
| Last updated in NPPES | Aug 28, 2025 |
| Certified by provider | Aug 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 23264 | 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 - Internal Medicine (SC) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 219 · 611 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $847.24 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Oak Street Health Physicians Group of South Carolina LLCSpartanburg, SC · 30 clinicians
Hospital affiliation
- Piedmont Medical CenterRock Hill, SC
Industry payments (Open Payments)
- 2025$46.37 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $31.67 | 1 |
| Astrazeneca Pharmaceuticals LP | $14.70 | 1 |
What the 2025 payments were for
- Food and Beverage$46.37 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 49 internal medicine physicians in Rock Hill · All internal medicine physicians in South Carolina