Esther Orieaku Iheukwumere, M.D
NPI 1598999062ActiveIndividual· Internal Medicine, Nephrology· Paris, TX
Internal Medicine, Nephrology (M.D) with Amarillo Nephrology Associates PA, practicing in Paris, Texas. Their prescriptions cost Medicare Part D more than their services did: $834,992 for 3,839 claims, against $262,387 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 10 companies reporting payments in 2025, $708.97 in all, mostly food and beverage. Lists Bsa Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1598999062 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | No |
| NPI issued | May 12, 2009 |
| Last updated in NPPES | Feb 12, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | P3355 | TX |
| Internal Medicine, Nephrology | 207RN0300X | 29475 | 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 - Nephrology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 785 |
|---|---|
| Services billed | 3,367 across 18 procedure codes |
| Paid by Medicare | $262,387 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,839 · 9,197 30-day fills |
|---|---|
| Patients | 663 |
| Total drug cost | $834,992 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Nephrology |
Medical group
- Amarillo Nephrology Associates PADumas, TX · 5 clinicians
Hospital affiliations
- Bsa HospitalAmarillo, TX
- Golden Plains Community HospitalBorger, TX
- Memorial HospitalDumas, TX
- Northwest Texas HospitalAmarillo, TX
- Pampa Regional Medical CenterPampa, TX
Other facilities
- Fmc Crown of TexasDialysis facility · Amarillo, TX
- Fresenius Kidney Care Palo DuroDialysis facility · Amarillo, TX
- Fresenius Medical Care Amarillo High PlainsDialysis facility · Amarillo, TX
- Fresenius Medical Care HerefordDialysis facility · Hereford, TX
Industry payments (Open Payments)
- 2025$708.97 · 22 payments from 10 companies
- 2024$649.70 · 24 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $219.40 | 5 |
| Glaxosmithkline, LLC. | $125.00 | 1 |
| Amgen Inc. | $95.31 | 4 |
| Ardelyx, Inc. | $65.23 | 3 |
| Novo Nordisk Inc | $60.50 | 3 |
What the 2025 payments were for
- Food and Beverage$708.97 · 22 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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