Iassist
Payments companies reported to CMS as associated with Iassist. "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 Iassist, 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 Iassist
These are the largest totals companies reported as associated with Iassist. 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) |
|---|---|---|---|
| Carl Deirmengian | Limerick, PA | Orthopaedic Surgery | $28,000.00 |
| Andrew Freiberg | Boston, MA | Orthopaedic Surgery | $1,600.00 |
| Sean Dingle | Sarasota, FL | Adult Reconstructive Orthopaedic Surgery | $146.55 |
| Clifford Evans | Kokomo, IN | Orthopaedic Surgery | $134.68 |
| Matthew Simons | Fresno, CA | Orthopaedic Surgery | $100.74 |
| Andrew Schneider | Troy, OH | Orthopaedic Surgery | $99.66 |
| Harold Jackson | Sacramento, CA | Neuromusculoskeletal Medicine, Sports Medicine | $93.34 |
| Matthew Mangini | Cincinnati, OH | Adult Reconstructive Orthopaedic Surgery | $34.75 |
| Mark Doerr | Dearborn, MI | Physician Assistant | $31.74 |
| Angelo Antaran | Dearborn, MI | Surgical | $31.74 |
Prescribed Iassist?
See what its makers reported for your doctor. Two steps, private, no account.
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.