Iolmaster 500
Payments companies reported to CMS as associated with Iolmaster 500. "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 Iolmaster 500, 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 Iolmaster 500
These are the largest totals companies reported as associated with Iolmaster 500. 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) |
|---|---|---|---|
| Jack Holladay | Bellaire, TX | $171,600.00 | |
| Kenneth Hoffer | Santa Monica, CA | Ophthalmology | $31,212.09 |
| Douglas Koch | Houston, TX | Ophthalmology | $1,125.00 |
| Cecilia Nguyen | Cypress, TX | Optometrist | $33.82 |
| Liching Han | Katy, TX | Optometrist | $15.02 |
Prescribed Iolmaster 500?
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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.