Katherine J. Willingham, MD
NPI 1245262435ActiveIndividual· Internal Medicine· Topeka, KS
Internal Medicine (MD) in Topeka, Kansas, trained at University of Texas Southwestern Medical School at Dallas (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $603,195 for 9,544 claims, against $204,300 paid for services in 2024. Philips North America LLC reported $15.95 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1245262435 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 7, 2006 |
| Last updated in NPPES | Dec 1, 2025 |
| Certified by provider | Dec 1, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 04-29268 | 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 - Internal Medicine (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 582 |
|---|---|
| Services billed | 3,859 across 71 procedure codes |
| Paid by Medicare | $204,300 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,544 · 21,303 30-day fills |
|---|---|
| Patients | 622 |
| Total drug cost | $603,195 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Select Rehabilitation, LLCGlenview, IL · 2,046 clinicians
- Cotton-O'Neil Clinic Revocable TrustTopeka, KS · 666 clinicians
Hospital affiliations
- Stormont Vail HospitalTopeka, KS
- University of Kansas Health System - St Francis CampusTopeka, KS
- University of Kansas HospitalKansas City, KS
Other facilities
- Elara CaringHome health agency · Topeka, KS
- Enhabit Home HealthHome health agency · Topeka, KS
- Faith Home HealthHome health agency · Topeka, KS
- Interim Healthcare of TopekaHome health agency · Topeka, KS
- Phoenix Home CareHome health agency · Overland Park, KS
- Brewster Health CenterNursing home · Topeka, KS
Industry payments (Open Payments)
- 2025$15.95 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Philips North America LLC | $15.95 | 1 |
What the 2025 payments were for
- Food and Beverage$15.95 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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