Eric Chang
Optometrist · Issaquah, WANPI 1427207216
Payments from drug & device makers
What this record shows
This record is dominated by grants: $7,875 of the $8,070 with a category attached, or 97.6%. Abbott accounts for 97.6% of it on its own, with 7 other manufacturers making up the rest. Reporting peaked in 2021 at $7,875 and has fallen 99.5% since, to $41 in 2024. Among optometrist clinicians in WA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 14 payments — averaging $576.41 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Abbott$8K
- Alcon$53
- Johnson & Johnson Vision Care, Inc.$35
- Shire North American Group Inc$29
- Biotissue Holdings Inc.$21
- Carl Zeiss Meditec AG$19
- plus $36 from 2 others
What the payments were for
- Grants$7,87598%
- Food & beverage$1582%
- Gifts$370%
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 |
|---|---|---|
| Abbott | 5 | $7,875 |
| Alcon | 3 | $53 |
| Johnson & Johnson Vision Care, Inc. | 1 | $35 |
| Shire North American Group Inc | 1 | $29 |
| Biotissue Holdings Inc. | 1 | $21 |
| Carl Zeiss Meditec AG | 1 | $19 |
| Bausch & Lomb Americas Inc. | 1 | $19 |
| Carl Zeiss Meditec, Inc. | 1 | $17 |
How this compares
$8,070 in reported general payments places this provider in the 95th percentile of 1,267 optometrist providers in Washington.
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 |
|---|---|---|
| Latanoprost | 26 | $132 |
Paid to pharmacies, not to this prescriber.
Other optometrist in Issaquah
- Samuel AhnIssaquah$9K
- Teri YoshimuraIssaquah$5K
- David KadingKirkland$397K
- Peter BergenskeOtis Orchards$355K
- Casey ClaypoolSpokane Valley$323K
- Charles ClaytonBellevue$195K
- Herminder BoparaiBellevue$131K
- Rajiv PatelVancouver$118K
- Alan ChousTacoma$115K
- Roya HabibiSeattle$109K
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.