Ezenwa C. Onyema, MD
NPI 1679852636ActiveIndividual· Internal Medicine· Houston, TX
Internal Medicine (MD) with Ut Physicians, practicing in Houston, Texas. In 2024 Medicare paid $42,264 for 166 patients, and Part D covered 136 of their prescriptions, 89% of them generic. Amgen Inc. reported $221.68 in payments in 2025, mostly food and beverage. Lists Memorial Hermann - Texas Medical Center as a hospital affiliation.
Overview
| NPI | 1679852636 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 9, 2011 |
| Last updated in NPPES | Jun 22, 2022 |
| Certified by provider | Jun 22, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD042538 | MD |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Hospitalist (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 166 |
|---|---|
| Services billed | 430 across 8 procedure codes |
| Paid by Medicare | $42,264 |
Part D prescriptions in 2024
| Prescriptions (claims) | 136 · 200 30-day fills |
|---|---|
| Patients | 45 |
| Total drug cost | $9,441 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical group
- Ut PhysiciansHouston, TX · 1,765 clinicians
Hospital affiliation
- Memorial Hermann - Texas Medical CenterHouston, TX
Industry payments (Open Payments)
- 2025$221.68 · 2 payments from 1 company
- 2024$107.29 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $221.68 | 2 |
What the 2025 payments were for
- Food and Beverage$221.68 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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