Stephen K. Williamson, M.D.
NPI 1598859183ActiveIndividual· Internal Medicine, Medical Oncology· Westwood, KS
Internal Medicine, Medical Oncology (M.D.) in Westwood, Kansas, licensed in KS, with an NPI issued in October 2006. Part D covered 23 prescriptions written in 2024, 74% of them generic.
Overview
| NPI | 1598859183 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 3, 2006 |
| Last updated in NPPES | May 12, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 04-19904 | KS |
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 - Medical Oncology (KS) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 23 · 39 30-day fills |
|---|---|
| Total drug cost | $1,828 |
| Generic share | 74% of claims |
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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