Jonathan Chang, MD
Ophthalmology · Middleton, WINPI 1346403961
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $2,950 of the $3,492 with a category attached, or 84.5%. Alcon accounts for 88.7% of it on its own, with 7 other manufacturers making up the rest. Reporting peaked in 2022 at $1,574 and has fallen 90.6% since, to $147 in 2025. Among ophthalmology clinicians in WI with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 15 payments — averaging $232.77 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alcon$3K
- Carl Zeiss Meditec, Inc.$214
- Genentech, Inc.$51
- AbbVie$43
- Dutch Ophthalmic, USA$37
- Scilex Pharmaceuticals Inc.$18
- plus $31 from 2 others
Across 37 payments — averaging $9097.78 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Genentech, Inc.$337K
What the payments were for
- Travel & lodging$2,95084%
- Food & beverage$54216%
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 | 3 | $3,097 |
| Carl Zeiss Meditec, Inc. | 3 | $214 |
| Genentech, Inc. | 1 | $51 |
| AbbVie(2 entities) | 3 | $43 |
| Dutch Ophthalmic, USA | 1 | $37 |
| Scilex Pharmaceuticals Inc. | 1 | $18 |
| Genentech USA, Inc. | 2 | $16 |
| Novartis | 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.
How this compares
$3,492 in reported general payments places this provider in the 90th percentile of 337 ophthalmology 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 | 84 | $3,364 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 23 | $335 |
| Polymyxin B Sul-TrimethoprimPolymyxin B Sulf/Trimethoprim | 33 | $198 |
| Latanoprost | 20 | $185 |
| Ketorolac Tromethamine | 14 | $181 |
Paid to pharmacies, not to this prescriber.
Other ophthalmology in Middleton
- Inder SinghRacine$2.5M
- Deepak SambharaWausau$388K
- John VukichWauwatosa$356K
- Eugene EldridgeKenosha$294K
- Michael ShapiroMadison$71K
- Douglas SalmAppleton$38K
- Julia AgapovMadison$26K
- Thomas HarveyChippewa Falls$23K
- Michael VrabecAppleton$20K
- Philip SmithMinocqua$18K
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.