Tia Dawn Derritt-Withers, PA-C
NPI 1992441034ActiveIndividual· Physician Assistant· Topeka, KS
Physician Assistant (PA-C) with Cotton-O'Neil Clinic Revocable Trust, practicing in Topeka, Kansas. Mostly services rather than prescriptions: Medicare paid $11,321 for 139 patients in 2024, with only 39 Part D claims. Globus Medical, Inc. reported $64.10 in payments in 2025, mostly food and beverage. Lists Stormont Vail Hospital as a hospital affiliation.
Overview
| NPI | 1992441034 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | May 11, 2022 |
| Last updated in NPPES | Jun 2, 2026 |
| Certified by provider | Jun 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 15-02637 | KS |
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 - Physician Assistant (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 139 |
|---|---|
| Services billed | 213 across 39 procedure codes |
| Paid by Medicare | $11,321 |
Part D prescriptions in 2024
| Prescriptions (claims) | 39 · 41 30-day fills |
|---|---|
| Patients | 32 |
| Total drug cost | $380.06 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Cotton-O'Neil Clinic Revocable TrustTopeka, KS · 666 clinicians
Hospital affiliation
- Stormont Vail HospitalTopeka, KS
Industry payments (Open Payments)
- 2025$64.10 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Globus Medical, Inc. | $64.10 | 1 |
What the 2025 payments were for
- Food and Beverage$64.10 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 108 physician assistants in Topeka · All physician assistants in Kansas