William C. Pierce, M.D.
NPI 1184718314ActiveIndividual· Internal Medicine, Hematology & Oncology· Salem, OR
Internal Medicine, Hematology & Oncology (M.D.) in Salem, Oregon, trained at University of California, Geffen School of Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $12,044,043 for 5,167 claims, against $3,107,061 paid for services in 2024. Astellas Pharma US Inc was the largest of 35 companies reporting payments in 2025, $2,218 in all, mostly food and beverage.
Overview
| NPI | 1184718314 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 3, 2006 |
| Last updated in NPPES | Jul 8, 2021 |
| Certified by provider | Jul 8, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | MD 18627 | OR |
| Internal Medicine, Hematology | 207RH0000X | MD18627 | 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 - Hematology/Oncology (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 494 |
|---|---|
| Services billed | 151,578 across 153 procedure codes |
| Paid by Medicare | $3,107,061 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,167 · 7,419 30-day fills |
|---|---|
| Patients | 734 |
| Total drug cost | $12,044,043 |
| Generic share | 75% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Hematology, Medical Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Good Samaritan Hospital CorvallisCorvallis, OR · 380 clinicians
- Oregon Oncology Specialists LLPSalem, OR · 41 clinicians
Hospital affiliations
- Good Samaritan Regional Medical CenterCorvallis, OR
- Salem Health West ValleyDallas, OR
- Salem HospitalSalem, OR
- Samaritan North Lincoln HospitalLincoln City, OR
- Samaritan Pacific Community HospitalNewport, OR
Other facilities
- Amedisys Home Health CareHome health agency · Salem, OR
Industry payments (Open Payments)
- 2025$2,218 · 94 payments from 35 companies
- 2024$1,452 · 60 payments from 26 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $509.59 | 13 |
| Astrazeneca Pharmaceuticals LP | $190.00 | 14 |
| Pfizer Inc. | $180.73 | 13 |
| Novartis Pharmaceuticals Corporation | $147.06 | 8 |
| E.R. Squibb & Sons, L.L.C. | $96.33 | 3 |
What the 2025 payments were for
- Food and Beverage$1,775 · 88 payments
- Education$442.70 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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