Covered recipient · General Payments record
MATTHEW K CHANG
Allopathic & Osteopathic Physicians Ophthalmology
General Payments · PY2018–2024
$9,344.45
- Reported across 195 records
- CMS publication 2026-01-23
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How these totals are calculated
- The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
- General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
- Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
- Methodology & Data — sourcing, labeling, and limitations.
By nature of payment
PY2024 · sorted by reported total
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $1,009.75 | 23 |
By paying entity
PY2024 · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| Alcon Laboratories Inc | $364.28 | 9 |
| Bausch & Lomb Americas Inc. | $242.93 | 5 |
| Carl Zeiss Meditec USA, Inc. | $165.26 | 1 |
| Johnson & Johnson Surgical Vision, Inc. | $84.93 | 1 |
| GLAUKOS CORPORATION | $79.02 | 3 |
| Oyster Point Pharma, Inc. | $21.91 | 1 |
| ABBVIE INC. | $18.39 | 1 |
| Rayner Intraocular Lenses Limited | $18.07 | 1 |
| Ocular Therapeutix, Inc. | $14.96 | 1 |
By program year
All program years on this page · sorted by year
Payment records · PY2024 (23)
Sorted by paying entity, then date · as published by CMS
Source & provenance
- Dataset
- CMS Open Payments — General Payments
- Publisher of source data
- Centers for Medicare & Medicaid Services
- CMS publication date
- 2026-01-23
- Program years on this page
- 2018, 2019, 2020, 2021, 2022, 2023, 2024
- Source files
- Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024
- Generated from
- OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
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