Mark Youssef
Surgery · Santa Monica, CANPI 1225200637
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $106,626 of the $113,404 with a category attached, or 94.0%. Galderma Laboratories, L.p. accounts for 82.9% of it on its own, with 11 other manufacturers making up the rest. Reporting peaked in 2020 at $32,722 and has fallen 99.0% since, to $326 in 2025. Among surgery 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 220 payments — averaging $515.47 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Galderma Laboratories, L.p.$94K
- AbbVie$16K
- Merz North America, Inc.$3K
- Revance Therapeutics, Inc.$384
- Tepha Inc$146
- Intuitive Surgical$114
- plus $220 from 6 others
What the payments were for
- Speaking & faculty fees$106,62694%
- Travel & lodging$2150%
- Food & beverage$6,5636%
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. | 73 | $94,021 |
| AbbVie(2 entities) | 108 | $15,906 |
| Merz North America, Inc. | 21 | $2,614 |
| Revance Therapeutics, Inc. | 7 | $384 |
| Tepha Inc | 1 | $146 |
| Intuitive Surgical | 1 | $114 |
| Solta Medical, A Division Of Bausch Health US, LLC | 3 | $72 |
| Gramercy Extremity Orthopedics LLC | 1 | $71 |
| Pacira Pharmaceuticals Incorporated | 2 | $31 |
| Innovation Technologies Inc | 1 | $22 |
| Novo Nordisk | 1 | $14 |
| Musculoskeletal Transplant Foundation Inc. | 1 | $9 |
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.
- BOTOX$4,612
- XEOMIN$1,538
- BOTOX COSMETIC$1,000
- GalaFLEX$146
- NATRELLE SALINE-FILLED BREAST IMPLANTS$129
- DAXXIFY$125
- Da Vinci Surgical System$114
How this compares
$113,404 in reported general payments places this provider in the 95th percentile of 2,363 surgery providers in California.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Cephalexin | 13 | $188 |
Paid to pharmacies, not to this prescriber.
Other surgery in Santa Monica
- David ChenSanta Monica$288K
- Timothy ChuterSan Francisco$8.8M
- Santiago HorganSan Diego$2.8M
- Rock LiuHayward$1.6M
- David LouriePasadena$1.4M
- Andrea PakulaThousand Oaks$1.4M
- Siew-Ming LeeFresno$1.3M
- Beemen KhalilPalo Alto$1.1M
- John LiphamLos Angeles$942K
- Alexander NedopilLodi$682K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.