Mark Cassol, MD
Ophthalmology · Louisville, KYNPI 1023128063
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $3,989 of the $4,921 with a category attached, or 81.1%. 14 manufacturers reported payments, led by Johnson & Johnson Surgical Vision, Inc. at 40.3% of the total. Reporting peaked in 2019 at $1,767 and has fallen 71.5% since, to $503 in 2025.
Across 97 payments — averaging $50.73 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Johnson & Johnson Surgical Vision, Inc.$2K
- Alcon$1K
- Ivantis, Inc$325
- Merz North America, Inc.$299
- Ocular Therapeutix, Inc.$187
- NEW World Medical,inc.$168
- plus $496 from 8 others
What the payments were for
- Consulting fees$93219%
- Food & beverage$3,98981%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Johnson & Johnson Surgical Vision, Inc. | 20 | $1,985 |
| Alcon | 40 | $1,461 |
| Ivantis, Inc | 5 | $325 |
| Merz North America, Inc. | 1 | $299 |
| Ocular Therapeutix, Inc. | 15 | $187 |
| NEW World Medical,inc. | 3 | $168 |
| Sight Sciences, Inc. | 3 | $154 |
| Genentech USA, Inc. | 1 | $125 |
| Harrow Eye, LLC | 1 | $124 |
| Biotissue Holdings Inc. | 3 | $40 |
| Lombart Brothers, Inc. | 2 | $17 |
| AbbVie | 1 | $17 |
| Johnson & Johnson Vision Care, Inc. | 1 | $11 |
| Phathom Pharmaceuticals, Inc. | 1 | $10 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- Tecnis Symfony IOL$1,139
- Clareon$493
- Clareon PanOptix Pro$238
- Hydrus Microstent$191
- AcrySof IQ PanOptix UV IOL$138
- PanOptix$133
- AMO PHACO NEEDLE$131
- Precision 1$128
- OMNI$125
- VABYSMO$125
- VEVYE$124
- Tecnis IOL$108
- Hydrus$100
How this compares
$4,921 in reported general payments places this provider in the 80th percentile of 216 ophthalmology providers in Kentucky.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| RestasisCyclosporine | 14 | $10,084 |
| Prednisolone Acetate | 31 | $1,016 |
| Latanoprost | 70 | $524 |
| Acyclovir | 15 | $140 |
| Brimonidine Tartrate | 23 | $132 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AbbVieRestasis | $17 | $10,08414 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 80th percentile of 216 ophthalmology providers in Kentucky.
Other ophthalmology in Louisville
- Jeremy ClarkLouisville$131K
- Guruprasad PattarLouisville$36K
- Gary FoulksLouisville$16K
- Christopher ComptonLouisville$13K
- Inder SingalLouisville$9K
- Rishi KumarLouisville$8K
- Frank BurnsLouisville$8K
- Steven BloomLouisville$6K
- Sharmini BalakrishnanLouisville$6K
- Sergei DmitrukLouisville$5K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.