Clayton M. Smiley, MD
NPI 1679544431ActiveIndividual· Internal Medicine, Nephrology· Portland, OR
Internal Medicine, Nephrology (MD) with Northwest Renal Clinic Inc, practicing in Portland, Oregon. Their prescriptions cost Medicare Part D more than their services did: $291,516 for 2,115 claims, against $142,317 paid for services in 2024. Lists Columbia Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1679544431 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 30, 2006 |
| Last updated in NPPES | Sep 25, 2025 |
| Certified by provider | Sep 25, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | MD27251 | OR |
| Internal Medicine, Nephrology | 207RN0300X | MD00048170 | 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 (HI); Practitioner - Nephrology (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 431 |
|---|---|
| Services billed | 2,230 across 32 procedure codes |
| Paid by Medicare | $142,317 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,115 · 5,474 30-day fills |
|---|---|
| Patients | 463 |
| Total drug cost | $291,516 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Northwest Renal Clinic IncPortland, OR · 40 clinicians
Hospital affiliations
- Columbia Memorial HospitalAstoria, OR
- Legacy Emanuel Medical CenterPortland, OR
- Legacy Good Samaritan Medical CenterPortland, OR
- Ohsu Hospital and ClinicsPortland, OR
- Salem HospitalSalem, OR
Other facilities
- Davita Woodburn DialysisDialysis facility · Woodburn, OR
- Fmc Qci SalemDialysis facility · Salem, OR
- Fmc West SalemDialysis facility · Salem, OR
- Fresenius Kidney Care Rose QuarterDialysis facility · Portland, OR
- Pnrs St Helens DialysisDialysis facility · Saint Helens, OR
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 83 nephrologists in Portland · All nephrologists in Oregon