Istent
Payments companies reported to CMS as associated with Istent. "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 Istent, 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 Istent
These are the largest totals companies reported as associated with Istent. 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) |
|---|---|---|---|
| Eric Donnenfeld | Garden City, NY | Ophthalmology | $465.00 |
| Eric Gershenbaum | Freehold, NJ | Ophthalmology | $363.87 |
| Christine Funke | Phoenix, AZ | Glaucoma Specialist | $344.49 |
| Jai Parekh | Woodland Park, NJ | Ophthalmology | $324.61 |
| Hoon Jung | Tacoma, WA | Ophthalmology | $247.84 |
| John Berdahl | Sioux Falls, SD | Ophthalmology | $234.02 |
| John Micheletti | Houston, TX | Ophthalmology | $223.75 |
| Eric Mann | Dover, NJ | Ophthalmology | $212.15 |
| Amarjit Atwal | Cheektowaga, NY | Ophthalmology | $208.53 |
| Carrie Joseph | Cheektowaga, NY | Optometrist | $208.53 |
Prescribed Istent?
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.