William Kwan
Dermatology · Los Angeles, CANPI 1376504407
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $77,404 of the $99,352 with a category attached, or 77.9%. Galderma Laboratories, L.p. accounts for 90.2% of it on its own, with 28 other manufacturers making up the rest. Reporting peaked in 2023 at $29,301 and has fallen 78.7% since, to $6,231 in 2025. Among dermatology 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 389 payments — averaging $255.40 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Galderma Laboratories, L.p.$90K
- AbbVie$3K
- Lumenis BE Inc$2K
- LEO Pharma Inc.$628
- Pfizer$546
- Merz North America, Inc.$501
- plus $3K from 23 others
What the payments were for
- Consulting fees$1,6002%
- Speaking & faculty fees$77,40478%
- Travel & lodging$6,7837%
- Food & beverage$13,41814%
- Education$1480%
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 |
|---|---|---|
| Galderma Laboratories, L.p. | 145 | $89,596 |
| AbbVie(2 entities) | 100 | $3,294 |
| Lumenis BE Inc | 1 | $1,823 |
| LEO Pharma Inc. | 42 | $628 |
| Pfizer | 12 | $546 |
| Merz North America, Inc. | 5 | $501 |
| Johnson & Johnson | 18 | $381 |
| Sanofi | 11 | $380 |
| Sun Pharmaceutical Industries Inc. | 8 | $355 |
| Revance Therapeutics, Inc. | 4 | $237 |
| Almirall LLC | 4 | $211 |
| Botanix SB Inc | 6 | $194 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 4 | $172 |
| Organon | 2 | $153 |
| Solta Medical, A Division Of Bausch Health US, LLC | 2 | $129 |
| E.r. Squibb & Sons, L.L.C. | 1 | $111 |
| Lilly USA, LLC | 4 | $103 |
| Janssen Scientific Affairs, LLC | 1 | $100 |
| UCB, Inc. | 3 | $74 |
| Amgen | 2 | $54 |
| Aclaris Therapeutics, Inc. | 2 | $50 |
| EPI Health, LLC | 2 | $49 |
| Biofrontera Inc. | 2 | $47 |
| Genentech USA, Inc. | 2 | $45 |
| Incyte Corporation | 2 | $35 |
| Verrica Pharmaceuticals Inc. | 1 | $26 |
| Novartis | 1 | $24 |
| Regeneron Healthcare Solutions, Inc. | 1 | $20 |
| Taro Pharmaceuticals USA, Inc. | 1 | $17 |
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
$99,352 in reported general payments places this provider in the 95th percentile of 1,875 dermatology providers in California.
Other dermatology in Los Angeles
- April ArmstrongLos Angeles$2.3M
- Jennifer HsiaoLos Angeles$746K
- Christopher HoLos Angeles$731K
- Howard SofenLos Angeles$345K
- Nada ElbulukLos Angeles$297K
- Derek JonesLos Angeles$272K
- Pearl GrimesLos Angeles$256K
- Paul YamauchiSanta Monica$2.9M
- Jennifer SoungSanta Ana$2.8M
- Robert GreenbergLivermore$2.6M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.