Zhiyong Yang
Retina Specialist · Houston, TXNPI 1053794784
Payments from drug & device makers
Across 5 payments — averaging $26.69 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alcon$133
What the payments were for
- Food & beverage$133100%
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.
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 | 5 | $133 |
How this compares
$133 in reported general payments places this provider in the 0th percentile of 108 retina specialist providers in Texas.
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 |
|---|---|---|
| Bromfenac Sodium | 55 | $11,748 |
| RestasisCyclosporine | 11 | $8,195 |
| Alphagan PBrimonidine Tartrate | 26 | $6,356 |
| Prednisolone Acetate | 90 | $2,850 |
| Brimonidine Tartrate | 25 | $1,138 |
| MoxifloxacinMoxifloxacin Hcl | 38 | $1,021 |
| ErythromycinErythromycin Base | 78 | $735 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 45 | $684 |
| Ketorolac Tromethamine | 18 | $597 |
| Diclofenac Sodium | 41 | $469 |
| Latanoprost | 18 | $155 |
Paid to pharmacies, not to this prescriber.
Other retina specialist in Houston
- Lindsey HarrisHouston$592K
- Petros CarvounisHouston$40K
- Garvin DavisHouston$38K
- Sami DahrHouston$34K
- Ella LeungHouston$12K
- Keith BourgeoisHouston$7K
- Jaafar El AnnanHouston$6K
- Richard FishHouston$5K
- Lee TranHouston$4K
- Michael LamHouston$4K
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.