Nina Efua Asaaba Williams, M.D.
Internal Medicine, Advanced Heart Failure and Transplant Cardiology (M.D.) with Healthtexas Provider Network and 2 other groups, practicing in Tulsa, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $765,701 for 3,525 claims, against $94,814 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 17 companies reporting payments in 2025, $618.34 in all, mostly food and beverage. Lists Muscogee (Creek) Nation Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1518370337 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 9, 2014 |
| Last updated in NPPES | May 8, 2024 |
| Certified by provider | Feb 9, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Advanced Heart Failure and Transplant Cardiology Primary | 207RA0001X | 35687 | OK |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 35687 | OK |
| Internal Medicine, Clinical Cardiac Electrophysiology | 207RC0001X | 35687 | OK |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Advanced Heart Failure and Transplant Cardiology (OK); Practitioner - Cardiovascular Disease (Cardiology) (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,783 |
|---|---|
| Services billed | 3,030 across 45 procedure codes |
| Paid by Medicare | $94,814 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,525 · 8,262 30-day fills |
|---|---|
| Patients | 520 |
| Total drug cost | $765,701 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Advanced Heart Failure And Transplant Cardiology |
Medical groups
- Healthtexas Provider NetworkWaxahachie, TX · 2,697 clinicians
- Warren Clinic IncTulsa, OK · 883 clinicians
- Saint Francis Hospital, Inc.Tulsa, OK · 61 clinicians
Hospital affiliations
- Muscogee (Creek) Nation Medical CenterOkmulgee, OK
- Saint Francis Hospital MuskogeeMuskogee, OK
- Saint Francis Hospital South, LLCTulsa, OK
- Saint Francis Hospital Vinita, IncVinita, OK
- Saint Francis Hospital, IncTulsa, OK
Industry payments (Open Payments)
- 2025$618.34 · 34 payments from 17 companies
- 2024$1,151 · 51 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $86.76 | 4 |
| Boston Scientific Corporation | $81.09 | 4 |
| Bayer Healthcare Pharmaceuticals Inc. | $78.37 | 4 |
| Novo Nordisk Inc | $58.33 | 3 |
| Amgen Inc. | $45.16 | 3 |
What the 2025 payments were for
- Food and Beverage$618.34 · 34 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Advanced Heart Failure and Transplant Cardiology providers in Oklahoma →