William Royster, MD, PHD
NPI 1093160855ActiveIndividual· Surgery, Surgical Oncology· Park Ridge, IL
Surgery, Surgical Oncology (MD, PHD) in Park Ridge, Illinois, licensed in IL, with an NPI issued in April 2016. Part D covered 13 prescriptions written in 2024, 100% of them generic. Intera Oncology, Inc reported $219.60 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1093160855 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Apr 29, 2016 |
| Last updated in NPPES | Sep 18, 2026 |
| Certified by provider | Sep 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Surgical Oncology Primary | 2086X0206X | 036178261 | IL |
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 - Surgical Oncology (IL) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 13 · 13 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $23.40 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$219.60 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intera Oncology, Inc | $219.60 | 1 |
What the 2025 payments were for
- Food and Beverage$219.60 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records