Dennis Tsang, MD
Hospitalist · Huntington Park, CANPI 1639663784
Payments from drug & device makers
What this record shows
Merck accounts for 83.4% of it on its own, with 1 other manufacturer making up the rest.
Across 8 payments — averaging $94.09 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$628
- Aurinia Pharma U.S., Inc.$125
Across 24 payments — averaging $27,958 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Eli Lilly$573K
- AstraZeneca$54K
- Chugai Pharmaceutical Co., Ltd.$26K
- Currax Pharmaceuticals LLC$14K
- Regeneron$4K
What the payments were for
- Travel & lodging$32944%
- Food & beverage$42456%
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 |
|---|---|---|
| Merck | 7 | $628 |
| Aurinia Pharma U.S., Inc. | 1 | $125 |
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.
- LUPKYNIS$125
How this compares
$753 in reported general payments places this provider in the 85th percentile of 2,469 hospitalist 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 |
|---|---|---|
| Amikacin Sulfate | 14 | $1,613 |
Paid to pharmacies, not to this prescriber.
Other hospitalist in Huntington Park
- Jennifer SchneiderSanta Rosa$1.2M
- Soham ShahBakersfield$844K
- Alpesh AminOrange$428K
- Retha GoodglickSanta Monica$156K
- Robert WachterSan Francisco$75K
- Steven WongTorrance$36K
- Edward LeeLos Angeles$30K
- Anjani KolahiOrange$30K
- Omar AldaasSan Diego$24K
- Summaiya MuhammadCastro Valley$22K
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.