Obioma Nnamdi Onuorah, M.D.
NPI 1982706818ActiveIndividual· Internal Medicine, Nephrology· Kennewick, WA
Internal Medicine, Nephrology (M.D.) with Tri-State Memorial Hospital, practicing in Kennewick, Washington. Their prescriptions cost Medicare Part D more than their services did: $275,521 for 1,497 claims, against $149,176 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 5 companies reporting payments in 2025, $190.29 in all, mostly food and beverage. Lists Clearwater Valley Hospital & Clinics and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1982706818 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 1, 2006 |
| Last updated in NPPES | Jun 20, 2022 |
| Certified by provider | Jun 20, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | MD26705 | OR |
| Internal Medicine, Nephrology | 207RN0300X | MD00043844 | WA |
| Specialist | 174400000X | MD00043844 | WA |
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 (OR); Practitioner - Nephrology (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 294 |
|---|---|
| Services billed | 1,372 across 17 procedure codes |
| Paid by Medicare | $149,176 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,497 · 3,062 30-day fills |
|---|---|
| Patients | 213 |
| Total drug cost | $275,521 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Tri-State Memorial HospitalClarkston, WA · 35 clinicians
Hospital affiliations
- Clearwater Valley Hospital & ClinicsOrofino, ID
- Pullman Regional HospitalPullman, WA
- St Mary's HospitalCottonwood, ID
- Syringa General HospitalGrangeville, ID
- Tri-State Memorial HospitalClarkston, WA
Other facilities
- Davita Kennewick DialysisDialysis facility · Kennewick, WA
- Davita Mid Columbia Kidney CenterDialysis facility · Pasco, WA
- Fkc Columbia BasinDialysis facility · Kennewick, WA
Industry payments (Open Payments)
- 2025$190.29 · 9 payments from 5 companies
- 2024$383.91 · 20 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $89.72 | 3 |
| Novo Nordisk Inc | $49.62 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $23.32 | 1 |
| Alnylam Pharmaceuticals Inc. | $14.03 | 1 |
| Vifor Pharma, Inc. | $13.60 | 1 |
What the 2025 payments were for
- Food and Beverage$190.29 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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