Anthony Parendo, MD
Retina Specialist · Appleton, WINPI 1043690233
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $1,003 of the $1,289 with a category attached, or 77.8%. Alcon accounts for 73.2% of it on its own, with 3 other manufacturers making up the rest. Reporting peaked in 2019 at $1,172 and has fallen 98.7% since, to $15 in 2022.
Across 12 payments — averaging $107.40 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alcon$944
- AbbVie$256
- Bausch & Lomb, A Division Of Bausch Health US, LLC$74
- Regeneron Healthcare Solutions, Inc.$15
What the payments were for
- Travel & lodging$27121%
- Food & beverage$1,00378%
- Education$151%
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 |
|---|---|---|
| Alcon | 4 | $944 |
| AbbVie | 4 | $256 |
| Bausch & Lomb, A Division Of Bausch Health US, LLC | 3 | $74 |
| Regeneron Healthcare Solutions, Inc. | 1 | $15 |
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.
- OZURDEX$126
How this compares
$1,289 in reported general payments places this provider in the 55th percentile of 24 retina specialist providers in Wisconsin.
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 | 81 | $4,488 |
| Ketorolac Tromethamine | 119 | $4,285 |
| Brimonidine Tartrate-TimololBrimonidine Tartrate/Timolol | 11 | $1,467 |
| Dorzolamide Hcl | 24 | $416 |
| Acetazolamide | 18 | $377 |
| Brimonidine Tartrate | 25 | $299 |
| Timolol Maleate | 13 | $175 |
Paid to pharmacies, not to this prescriber.
Other retina specialist in Appleton
- Benjamin ErnstAppleton$3K
- Michael PossinAppleton$80
- Jennifer AdeghateMilwaukee$52K
- Lincoln ShawMilwaukee$14K
- Rajeev BuddiNeenah$8K
- John RosculetNeenah$8K
- Clinton WarrenKenosha$5K
- Nicholas TosiMilwaukee$5K
- Wei Chuan WangGreen Bay$3K
- Charles HejnyNeenah$3K
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.