Thinh Chau, MD
Dermatology · Los Alamitos, CANPI 1811448251
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $11,399 of the $14,820 with a category attached, or 76.9%. It is spread thinly across 27 manufacturers, the largest accounting for just 20.1% — the pattern of someone who eats at a lot of different presentations. 2025 is the largest year on record at $7,834, more than ten times the $451 reported in 2021.
Across 259 payments — averaging $57.22 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sanofi$3K
- UCB, Inc.$2K
- AbbVie$2K
- Johnson & Johnson$1K
- Janssen Scientific Affairs, LLC$1K
- Novartis$929
- plus $5K from 21 others
What the payments were for
- Consulting fees$1,78612%
- Travel & lodging$1,1738%
- Food & beverage$11,39977%
- Education$4623%
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 |
|---|---|---|
| Sanofi | 20 | $2,978 |
| UCB, Inc. | 29 | $1,895 |
| AbbVie | 22 | $1,601 |
| Johnson & Johnson | 30 | $1,184 |
| Janssen Scientific Affairs, LLC | 9 | $1,014 |
| Novartis | 14 | $929 |
| Regeneron | 7 | $650 |
| Incyte Corporation | 25 | $643 |
| LEO Pharma Inc. | 15 | $520 |
| E.r. Squibb & Sons, L.L.C. | 7 | $464 |
| Amgen | 17 | $419 |
| Galderma Laboratories, L.p. | 10 | $382 |
| Dermavant Sciences, Inc. | 5 | $304 |
| Lilly USA, LLC | 9 | $295 |
| Pfizer | 13 | $285 |
| Regeneron Healthcare Solutions, Inc. | 6 | $267 |
| Boehringer Ingelheim | 2 | $250 |
| Organon | 3 | $193 |
| Revance Therapeutics, Inc. | 3 | $150 |
| Blueprint Medicines Corporation | 1 | $104 |
| Arcutis Biotherapeutics, Inc. | 3 | $85 |
| Sun Pharmaceutical Industries Inc. | 3 | $67 |
| LNHC, Inc | 2 | $37 |
| ANI Pharmaceuticals, Inc. | 1 | $35 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 1 | $24 |
| Botanix SB Inc | 1 | $23 |
| Pierre Fabre Pharmaceuticals, Inc. | 1 | $19 |
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
$14,820 in reported general payments places this provider in the 85th percentile of 1,875 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Fluorouracil | 116 | $4,724 |
| Calcipotriene | 46 | $4,313 |
| Pimecrolimus | 12 | $2,202 |
| Clobetasol Propionate | 56 | $1,693 |
| Triamcinolone Acetonide | 53 | $1,632 |
| Tacrolimus | 13 | $1,490 |
| Ketoconazole | 66 | $1,477 |
| Mupirocin | 37 | $619 |
| Clindamycin Phosphate | 16 | $490 |
| Fluocinonide | 17 | $359 |
| Doxycycline Monohydrate | 15 | $285 |
| Metronidazole | 11 | $269 |
Paid to pharmacies, not to this prescriber.
Other dermatology in Los Alamitos
- Paul YamauchiSanta Monica$2.9M
- Jennifer SoungSanta Ana$2.8M
- Robert GreenbergLivermore$2.6M
- Neal BhatiaSan Diego$2.5M
- April ArmstrongLos Angeles$2.3M
- Jeffrey CrowleyBakersfield$2.1M
- Jashin WuCorona$2M
- Raja SivamaniSacramento$1.9M
- Tien NguyenFountain Valley$1.2M
- Tina BhutaniSan Francisco$1.1M
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.