Thomas Knapp, MD
Sports Medicine · Santa Monica, CANPI 1871676767
Payments from drug & device makers
What this record shows
This record is dominated by royalties or licence payments: $2,430,200 of the $2,453,331 with a category attached, or 99.1%. Depuy Synthes Products, Inc. accounts for 99.1% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2019 at $1,280,769 and has fallen 83.8% since, to $208,096 in 2025. Among sports medicine 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 87 payments — averaging $28,199 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Depuy Synthes Products, Inc.$2.4M
- Medical Device Business Services, Inc.$22K
- Johnson & Johnson$674
- Smith+Nephew$111
- Avanos Medical$68
What the payments were for
- Royalty or licence$2,430,20099%
- Consulting fees$20,3201%
- Travel & lodging$1,6470%
- Food & beverage$1,1640%
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 |
|---|---|---|
| Depuy Synthes Products, Inc. | 33 | $2,430,200 |
| Medical Device Business Services, Inc. | 16 | $22,278 |
| Johnson & Johnson | 34 | $674 |
| Smith+Nephew | 2 | $111 |
| Avanos Medical | 2 | $68 |
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.
- CHIA PERCPASSER$2,391,290
- HEALIX$1,447,157
- HEALIX KNOTLESS PEEK$983,043
- NA$5,520
- GRYPHON$1,684
- MILAGRO$1,684
- TRUESPAN ORTHOCORD$120
- DYNATAPE$120
- DYNACORD$120
- TWISTR$120
How this compares
$2,453,331 in reported general payments places this provider in the 95th percentile of 662 sports medicine 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 |
|---|---|---|
| Cephalexin | 15 | $55 |
Paid to pharmacies, not to this prescriber.
Other sports medicine in Santa Monica
- Michael GerhardtSanta Monica$328K
- Frank PetriglianoSanta Monica$115K
- Neal ElattracheLos Angeles$51M
- Nathaniel CohenLos Gatos$6.4M
- Michael FreehillStanford$1.6M
- Allan MishraMenlo Park$1.5M
- Heinz Hoeneckela Jolla$1.4M
- Seth ShermanStanford$1.1M
- Stephan YacoubianBurbank$1M
- Stephen Snydervan Nuys$922K
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.