Mark Cheung
Optometrist · Bakersfield, CANPI 1639464555
Payments from drug & device makers
Across 219 payments — averaging $29.17 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Eyevance Pharmaceuticals LLC$2K
- Sun Pharmaceutical Industries Inc.$706
- Novartis$702
- Alcon$509
- Coopervision Inc.$437
- Aerie Pharmaceuticals, Inc.$406
- plus $2K from 18 others
What the payments were for
- Consulting fees$1,00016%
- Food & beverage$5,13980%
- Gifts$2504%
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 |
|---|---|---|
| Eyevance Pharmaceuticals LLC | 37 | $1,709 |
| Sun Pharmaceutical Industries Inc. | 28 | $706 |
| Novartis | 38 | $702 |
| Alcon | 14 | $509 |
| Coopervision Inc. | 9 | $437 |
| Aerie Pharmaceuticals, Inc. | 30 | $406 |
| Bausch & Lomb Americas Inc. | 15 | $337 |
| Visionary Optics LLC | 1 | $250 |
| Johnson & Johnson Surgical Vision, Inc. | 3 | $232 |
| Oyster Point Pharma, Inc. | 8 | $180 |
| Biotissue Holdings Inc. | 5 | $175 |
| Johnson & Johnson Vision Care, Inc. | 7 | $148 |
| AbbVie | 5 | $111 |
| Rxsight Inc | 1 | $110 |
| Bausch & Lomb, A Division Of Bausch Health US, LLC | 4 | $86 |
| Dompe US, Inc. | 2 | $58 |
| Shire North American Group Inc | 2 | $47 |
| Kala Pharmaceuticals, Inc. | 2 | $42 |
| Tarsus Pharmaceuticals, Inc. | 2 | $39 |
| Amgen | 2 | $29 |
| Astellas Pharma US Inc | 1 | $20 |
| Harrow Eye, LLC | 1 | $19 |
| Glaukos Corporation | 1 | $19 |
| Thea Pharma Inc. | 1 | $18 |
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.
- Flarex$1,292
- MiSight Contact Lens$266
- Rhopressa$217
- Rocklatan$217
- Precision7$150
- DAILIES$142
- Prokera$123
- AmnioGraft$123
- CEQUA$111
- RXSIGHT CONTACT LENS$110
- RXSIGHT INJECTOR CARTRIDGE$110
- RXSIGHT INJECTOR HANDPIECE$110
- RXSIGHT LIGHT DELIVERY DEVICE (LDD)$110
- RXSIGHT LIGHT ADJUSTABLE LENS (RXLAL)$110
- AMO PHACO NEEDLE$110
How this compares
$6,389 in reported general payments places this provider in the 95th percentile of 6,778 optometrist providers in California.
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 | 73 | $699 |
| Prednisolone Acetate | 13 | $283 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 18 | $217 |
Paid to pharmacies, not to this prescriber.
Other optometrist in Bakersfield
- Vin DangBakersfield$326K
- Meng LinBerkeley$6.9M
- Steve YoelinNewport Beach$6.1M
- Matthew GellerSpring Valley$3.5M
- David Kasanoffla Mesa$1M
- Colton HeinrichFullerton$987K
- Elsa PaoOakland$910K
- Keith WanSan Diego$887K
- Selena ChanSan Francisco$677K
- Melissa EricksonDavis$522K
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.