William Joseph Conway, NP-C
NPI 1558811380ActiveIndividual· Nurse Practitioner, Family· Massillon, OH
Nurse Practitioner, Family (NP-C) with Tri-County Hematology and Oncology Associates Inc, practicing in Massillon, Ohio. Their prescriptions cost Medicare Part D more than their services did: $791,212 for 1,360 claims, against $60,983 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 51 companies reporting payments in 2025, $4,181 in all, mostly food and beverage. Lists Union Hospital as a hospital affiliation.
Overview
| NPI | 1558811380 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP-C |
| Sole proprietor | No |
| NPI issued | Oct 5, 2016 |
| Last updated in NPPES | May 22, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | APRN.CNP.019986 | OH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 67 |
|---|---|
| Services billed | 3,089 across 50 procedure codes |
| Paid by Medicare | $60,983 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,360 · 1,705 30-day fills |
|---|---|
| Patients | 326 |
| Total drug cost | $791,212 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Tri-County Hematology and Oncology Associates IncMassillon, OH · 6 clinicians
Hospital affiliation
- Union HospitalDover, OH
Industry payments (Open Payments)
- 2025$4,181 · 213 payments from 51 companies
- 2024$3,548 · 190 payments from 44 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $272.89 | 14 |
| Daiichi Sankyo Inc. | $230.76 | 15 |
| Novartis Pharmaceuticals Corporation | $229.89 | 11 |
| Pfizer Inc. | $222.91 | 14 |
| Astrazeneca Pharmaceuticals LP | $214.33 | 10 |
What the 2025 payments were for
- Food and Beverage$3,981 · 210 payments
- Education$199.95 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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