Ethan-Quan Nguyen, MD
Procedural Dermatology · Riverside, CANPI 1104828508
Payments from drug & device makers
Across 653 payments — averaging $22.87 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$3K
- LEO Pharma Inc.$2K
- Johnson & Johnson$2K
- Novartis$1K
- Lilly USA, LLC$1K
- Pfizer$1K
- plus $5K from 19 others
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 |
|---|---|---|
| AbbVie | 184 | $3,486 |
| LEO Pharma Inc. | 84 | $1,725 |
| Johnson & Johnson | 66 | $1,718 |
| Novartis | 51 | $1,253 |
| Lilly USA, LLC | 28 | $1,185 |
| Pfizer | 60 | $1,063 |
| UCB, Inc. | 44 | $926 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 37 | $782 |
| Incyte Corporation | 27 | $603 |
| Janssen Scientific Affairs, LLC | 5 | $532 |
| Sanofi | 9 | $437 |
| Galderma Laboratories, L.p. | 17 | $316 |
| Regeneron Healthcare Solutions, Inc. | 9 | $217 |
| E.r. Squibb & Sons, L.L.C. | 5 | $156 |
| Amgen | 6 | $122 |
| Sun Pharmaceutical Industries Inc. | 4 | $110 |
| Mayne Pharma Commercial LLC | 3 | $62 |
| Genentech USA, Inc. | 3 | $46 |
| Arcutis Biotherapeutics, Inc. | 2 | $41 |
| Dermira, Inc. | 2 | $36 |
| Bristol Myers Squibb | 2 | $28 |
| Verrica Pharmaceuticals Inc. | 1 | $25 |
| Promius Pharma LLC | 1 | $24 |
| Organon | 2 | $21 |
| Boehringer Ingelheim | 1 | $18 |
How this compares
$14,932 in reported general payments places this provider in the 80th percentile of 108 procedural dermatology 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.
Other procedural dermatology in Riverside
- Jafar KoupaieRiverside$4K
- Sabrina FabiSan Diego$6.8M
- Natasha MesinkovskaMission Viejo$4M
- Sam Khalifianla Mesa$3.6M
- Mitchel GoldmanSan Diego$1.5M
- Jeanette BlackLos Angeles$492K
- Suzanne KilmerSacramento$475K
- Rebecca FitzgeraldLos Angeles$324K
- Aram KechichianSanta Clarita$300K
- Christopher ZacharyIrvine$269K
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.