Nexis
Payments companies reported to CMS as associated with Nexis. "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 Nexis, 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 Nexis
These are the largest totals companies reported as associated with Nexis. 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) |
|---|---|---|---|
| Anne Johnson | New York, NY | Foot and Ankle Surgery | $429,038.31 |
| Brian Loder | Clinton Township, MI | Foot & Ankle Surgery | $317,533.42 |
| Oliver Schipper | Arlington, VA | Foot and Ankle Surgery | $314,301.37 |
| Bradley Abicht | La Crosse, WI | Podiatrist | $124,997.62 |
| Cary Chapman | Plantation, FL | Orthopaedic Surgery | $75,811.98 |
| Anthony Ndu | Philadelphia, PA | Orthopaedic Surgery | $70,190.89 |
| Brian Burgess | Naperville, IL | Foot & Ankle Surgery | $67,364.23 |
| Thomas Mcdonald | Enfield, CT | Foot and Ankle Surgery | $65,200.03 |
| Amiethab Aiyer | Baltimore, MD | Orthopaedic Surgery | $29,572.45 |
| Deena Horn | New York, NY | Foot & Ankle Surgery | $26,015.41 |
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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.