K-Files
Payments companies reported to CMS as associated with K-Files. "Associated with" is CMS's wording: it links a payment to a product without saying the money was spent on it.
By year
Payments reported as associated with K-Files, per program year, as reported to CMS.
Who makes it
Specialties most often involved
Where the associated payments went, by the receiving clinician's specialty.
Clinicians most associated with K-Files
These are the largest totals companies reported as associated with K-Files. They are typically speaking or consulting arrangements, which companies must report by law; appearing here is not evidence of anything improper.
| Clinician | Location | Specialty | Associated payments (2023-2025) |
|---|---|---|---|
| Bernice Ko | Venice, CA | Endodontics | $101.67 |
| Brian Royle | Fresno, CA | General Practice (Dentist) | $63.12 |
| Ammon Anderson | Sioux City, IA | Endodontics | $40.63 |
| Michael Wheatley | Sioux City, IA | Endodontics | $40.63 |
| Kiya Stack | Lincoln, NE | Dentist | $40.63 |
| Jeffrey Lilly | West Des Moines, IA | Endodontics | $40.15 |
| Benjamin Nashleanas | West Des Moines, IA | Endodontics | $40.15 |
| Thomas Becker | West Des Moines, IA | Endodontics | $40.15 |
| Lindsey Meder-Cowherd | West Des Moines, IA | Dentist | $40.15 |
| Gary Matt | West Des Moines, IA | Dentist | $40.15 |
Prescribed K-Files?
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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.