Yat Choi Kwong
Allergy & Immunology · Los Angeles, CANPI 1649315698
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $174,682 of the $180,893 with a category attached, or 96.6%. Phadia US Inc. accounts for 97.8% of it on its own, with 21 other manufacturers making up the rest. Reporting peaked in 2022 at $97,413 and has fallen 98.9% since, to $1,028 in 2025. Among allergy & immunology clinicians in CA 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 195 payments — averaging $927.66 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Phadia US Inc.$177K
- GSK$1K
- Novartis$525
- CSL Behring$287
- Biocryst US Sales Co., LLC$256
- Blueprint Medicines Corporation$191
- plus $1K from 16 others
What the payments were for
- Consulting fees$174,68297%
- Travel & lodging$1,5341%
- Food & beverage$4,6093%
- Education$690%
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 |
|---|---|---|
| Phadia US Inc. | 58 | $176,842 |
| GSK | 51 | $1,376 |
| Novartis | 23 | $525 |
| CSL Behring | 9 | $287 |
| Biocryst US Sales Co., LLC | 9 | $256 |
| Blueprint Medicines Corporation | 3 | $191 |
| Pharming Healthcare, Inc. | 7 | $168 |
| Genentech USA, Inc. | 7 | $165 |
| Amgen(2 entities) | 2 | $159 |
| Grifols USA, LLC | 1 | $152 |
| Sobi, Inc | 1 | $128 |
| Takeda Pharmaceuticals U.S.A., Inc. | 4 | $121 |
| Sanofi | 3 | $118 |
| Regeneron | 2 | $88 |
| Galderma Laboratories, L.p. | 3 | $76 |
| AstraZeneca | 4 | $71 |
| Alk-abello, Inc | 2 | $45 |
| Regeneron Healthcare Solutions, Inc. | 2 | $40 |
| Ionis Pharmaceuticals, Inc. | 1 | $31 |
| ARS Pharmaceuticals Operations, Inc. | 1 | $25 |
| Shire North American Group Inc | 1 | $18 |
| Circassia Inc. | 1 | $12 |
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.
How this compares
$180,893 in reported general payments places this provider in the 95th percentile of 426 allergy & immunology providers in California.
Other allergy & immunology in Los Angeles
- Asif RafiLos Angeles$49K
- Sheila Bonilla-TandocLos Angeles$25K
- Raffi TachdjianSanta Monica$3.7M
- Bob GengSan Diego$3.3M
- Vinay MehtaLaguna Niguel$1.3M
- Andrew WhiteSan Diego$752K
- Marc RiedlSan Diego$725K
- Katharine WoessnerSan Diego$581K
- Brian Modenala Jolla$453K
- Heena Shah PatelUpland$428K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.