Oforbuike Chukwunenye Ewelukwa, MD
NPI 1891094561ActiveIndividual· Internal Medicine, Gastroenterology· Katy, TX
Internal Medicine, Gastroenterology (MD) in Katy, Texas, licensed in TX and OH, with an NPI issued in March 2011. Their prescriptions cost Medicare Part D more than their services did: $401,517 for 776 claims, against $74,320 paid for services in 2024. Abbvie Inc. was the largest of 12 companies reporting payments in 2025, $1,213 in all, mostly food and beverage. Lists Memorial Hermann Katy Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1891094561 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 21, 2011 |
| Last updated in NPPES | Jan 31, 2024 |
| Certified by provider | Jan 31, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | R3503 | TX |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Internal Medicine | 207R00000X | 35.122783 | OH |
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 - Gastroenterology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 218 |
|---|---|
| Services billed | 748 across 31 procedure codes |
| Paid by Medicare | $74,320 |
Part D prescriptions in 2024
| Prescriptions (claims) | 776 · 1,536 30-day fills |
|---|---|
| Patients | 320 |
| Total drug cost | $401,517 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Memorial Hermann Katy HospitalKaty, TX
- Memorial Hermann Memorial City HospitalHouston, TX
Other facilities
- Memorial Hermann Rehabilitation Hospital KatyInpatient rehabilitation facility · Katy, TX
Industry payments (Open Payments)
- 2025$1,213 · 49 payments from 12 companies
- 2024$1,187 · 44 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $443.34 | 22 |
| Madrigal Pharmaceuticals | $193.58 | 5 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $160.11 | 10 |
| Genzyme Corporation | $121.58 | 1 |
| Gilead Sciences, Inc. | $86.13 | 3 |
What the 2025 payments were for
- Food and Beverage$1,213 · 49 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 29 gastroenterologists in Katy · All gastroenterologists in Texas