Gregory Fenton, MD
Ophthalmology · Wheaton, ILNPI 1114136959
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $108 of the $127 with a category attached, or 84.7%. 5 manufacturers reported payments, led by Harrow Eye, LLC at 51.7% of the total. 2025 is the largest year on record at $77, 4.0 times the $19 reported in 2020. That places this record below the midpoint for ophthalmology clinicians in IL, where the typical reported total is $1,164.
Across 6 payments — averaging $21.19 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Harrow Eye, LLC$66
- Carl Zeiss Meditec AG$19
- Sun Pharmaceutical Industries Inc.$18
- Novartis$12
- Lumibird Medical Inc.$12
What the payments were for
- Food & beverage$10885%
- Gifts$1915%
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 |
|---|---|---|
| Harrow Eye, LLC | 2 | $66 |
| Carl Zeiss Meditec AG | 1 | $19 |
| Sun Pharmaceutical Industries Inc. | 1 | $18 |
| Novartis | 1 | $12 |
| Lumibird Medical Inc. | 1 | $12 |
How this compares
$127 in reported general payments places this provider in the 15th percentile of 773 ophthalmology providers in Illinois.
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 |
|---|---|---|
| Prednisolone Acetate | 394 | $10,771 |
| ProlensaBromfenac Sodium | 21 | $9,235 |
| Bromfenac Sodium | 21 | $4,762 |
| Ketorolac Tromethamine | 180 | $2,557 |
| Difluprednate | 17 | $1,695 |
| MoxifloxacinMoxifloxacin Hcl | 93 | $1,611 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 85 | $1,127 |
| Fluorometholone | 19 | $976 |
| Atropine Sulfate | 14 | $413 |
| Dorzolamide Hcl | 13 | $236 |
| Latanoprost | 21 | $191 |
| ErythromycinErythromycin Base | 13 | $114 |
Paid to pharmacies, not to this prescriber.
Other ophthalmology in Wheaton
- Seenu HariprasadChicago$2.3M
- Lisa NijmSpringfield$1.7M
- Kathleen MornoNorth Riverside$1.2M
- Veeral ShethOak Forest$716K
- James KatzDes Plaines$642K
- Mitchell JacksonLake Villa$584K
- David LubeckHomewood$575K
- Parag MajmudarHighland Park$451K
- Daniel OwensLombard$343K
- Yannek LeidermanChicago$312K
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.