Physician profile
Robert T Chang
NPI 1417044280
$105,498.74
in general payments reported to CMS, 2019-2025
27 companies · $20K in 2025
The $20K reported for 2025 was more than what 96% of Glaucoma Specialist providers received nationally (typical 2025 total: $608).
Payments by year
General and research payments by program year, as reported to CMS.
General payments by year: 2019: $12K · 2020: $4,214 · 2021: $11K · 2022: $8,281 · 2023: $12K · 2024: $38K · 2025: $20K.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Consulting Fee: $51K · Food and Beverage: $8,936 · Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program: $7,125 · Travel and Lodging: $4,156.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Consulting Fee | $50,645.00 |
| Food and Beverage | $8,936.06 |
| Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program | $7,125.00 |
| Travel and Lodging | $4,155.79 |
Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.
Who reported paying
General payments only, as reported to CMS. Research payments are listed separately below. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Alcon Vision LLC | $40,840.90 | 2019-2025 | Hydrus Microstent, Voyager Dslt, Clareon |
| Alcon Research LLC | $17,723.10 | 2022-2025 | Ngenuity |
| Sight Sciences, INC. | $14,169.79 | 2019-2025 | Omni Surgical System, Sion Surgical Instrument |
| Allergan, INC. | $6,240.00 | 2019-2020 | |
| Aerie Pharmaceuticals, INC. | $5,413.01 | 2019-2021 | |
| Carl Zeiss Meditec, INC. | $3,250.00 | 2023-2024 | Veracity Surgical, Visumax, Iolmaster 700 |
| Ivantis, INC | $2,949.38 | 2021 | |
| Glaukos Corporation | $2,875.71 | 2023-2025 | Idosetr, Idose, Istent Trabecular Micro-Bypass System Model Is3 |
| Iridex Corporation | $1,817.48 | 2019-2022 | |
| Roche Products Limited | $1,714.17 | 2021 | |
| Carl Zeiss Meditec USA, INC. | $1,572.40 | 2021-2024 | Cirrus Hd-Oct, Iolmaster 700, Clarus |
| Omeros Corporation | $1,564.23 | 2021 | |
| Boston Scientific Corporation | $1,547.42 | 2019 | |
| Ocular Therapeutix, INC. | $1,047.96 | 2021-2022 | |
| Abbvie INC. | $986.50 | 2023-2025 | Xen Glaucoma Treatment System |
Show all 25 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Johnson & Johnson Surgical Vision, INC. | $359.19 | 2022-2023 | Tecnis Iol, Veritas Vision System, Tecnis Iol |
| New World Medical,INC. | $338.13 | 2020-2022 | |
| Bausch & Lomb Americas INC. | $204.50 | 2024-2025 | Vyzulta, Xipere, Miebo |
| Tarsus Pharmaceuticals, INC. | $203.96 | 2024 | Xdemvy |
| Eyepoint US, INC. | $182.26 | 2021 | |
| Oyster Point Pharma, INC. | $151.31 | 2022-2024 | Tyrvaya |
| Harrow Eye, LLC | $124.72 | 2023 | Iheezo |
| Biogen, INC. | $109.00 | 2022-2024 | Byooviz |
| Nova Eye, INC. | $89.72 | 2023 | |
| Beaver-Visitec International, INC. | $23.90 | 2025 |
2 companies reported research payments only; those appear in the research section below.
Drugs and devices associated with these payments
CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.
Research and ownership
$12,818.86 in research payments reported 2019-2025. Research payments are often institution-directed and tied to clinical trials: they are reported under a clinician's name but frequently go to a hospital or research organization, and usually reflect participation in medical research.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Robert Chang listed in the CMS Open Payments database. Can you tell me about your work with those companies?"
- "Is there a generic or alternative to this medication, and would it work as well for me?"
- "What made you choose this particular treatment for my situation?"
These are normal questions. A good clinician will welcome them.
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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.