Louis Kwong
Adult Reconstructive Orthopaedic Surgery · Torrance, CANPI 1750450276
Payments from drug & device makers
What this record shows
The money is spread across several categories — royalties or licence payments (55.4%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. Zimmer Biomet accounts for 95.2% of it on its own, with 22 other manufacturers making up the rest. Among adult reconstructive orthopaedic surgery clinicians in CA with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 426 payments — averaging $1452.96 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Zimmer Biomet$589K
- Convatec Inc.$16K
- Heron Therapeutics, Inc.$6K
- Regeneron$3K
- Musculoskeletal Transplant Foundation Inc.$2K
- Janssen Research & Development, LLC$983
- plus $2K from 17 others
Across 78 payments — averaging $4476.03 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Zimmer Biomet$185K
- Janssen Research & Development, LLC$104K
- Pfizer$40K
- Endo Pharmaceuticals Inc.$20K
What the payments were for
- Royalty or licence$342,97055%
- Consulting fees$251,95041%
- Travel & lodging$17,6513%
- Food & beverage$6,3881%
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 |
|---|---|---|
| Zimmer Biomet | 333 | $589,304 |
| Convatec Inc. | 20 | $16,218 |
| Heron Therapeutics, Inc. | 18 | $5,647 |
| Regeneron | 1 | $3,200 |
| Musculoskeletal Transplant Foundation Inc. | 14 | $1,787 |
| Janssen Research & Development, LLC | 6 | $983 |
| DNE LLC | 2 | $622 |
| Molnlycke Health Care US, LLC | 3 | $209 |
| Johnson & Johnson(3 entities) | 4 | $190 |
| Stryker | 1 | $154 |
| Globus Medical | 2 | $105 |
| Axogen | 4 | $101 |
| Acell, Inc. | 4 | $98 |
| Integra Lifesciences Corporation | 3 | $66 |
| Tracpatch Health, Inc | 1 | $63 |
| Smith+Nephew | 2 | $41 |
| Orthopediatrics Corp. | 1 | $39 |
| Misonix Inc | 2 | $38 |
| Orthofix Medical, Inc. | 1 | $26 |
| Biomarin Pharmaceutical Inc. | 1 | $19 |
| Bioventus LLC | 1 | $18 |
| KCI USA, Inc. | 1 | $15 |
| Illuminoss Medical, Inc. | 1 | $13 |
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.
- Persona$383,524
- Persona Revision$97,335
- Trabecular Metal (TM)$31,750
- LCCK NexGen$28,753
- Acetabular$25,375
- NexGen$23,245
- RHK$17,120
- AQUACEL AG$12,026
- Arcos$8,875
- Fuzion$8,625
- Knees Product Portfolio$7,000
- Vanguard$5,625
- HTX-011$5,091
- AQUACEL Ag Surgical$3,563
- TM Tibial Cones$3,000
- Vanguard Revision$3,000
- TMARS Liners$2,875
- Avenir$2,000
- ZCA Cups$1,125
- ACDA Solution$1,000
How this compares
$618,960 in reported general payments places this provider in the 90th percentile of 136 adult reconstructive orthopaedic surgery providers in California.
See all adult reconstructive orthopaedic surgery providers in California →
Other adult reconstructive orthopaedic surgery in Torrance
- William MaloneyStanford$11.1M
- James CaillouetteNewport Beach$4.8M
- William LongLos Angeles$2.8M
- John DearbornMenlo Park$2.5M
- William Bugbeela Jolla$2.1M
- James HuddlestonStanford$1.5M
- Alexander SahFremont$1.2M
- John DianaNapa$981K
- Thomas DonaldsonColton$893K
- Derek AmanatullahStanford$828K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.