Koonlawee Nademanee
Clinical Cardiac Electrophysiology · Los Angeles, CANPI 1699882415
Payments from drug & device makers
What this record shows
This record is dominated by royalties or licence payments: $421,857 of the $445,923 with a category attached, or 94.6%. Biosense Webster, Inc. accounts for 97.2% of it on its own, with 3 other manufacturers making up the rest. Reporting peaked in 2019 at $99,734 and has fallen 58.1% since, to $41,751 in 2025. Among clinical cardiac electrophysiology 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 41 payments — averaging $10,876 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Biosense Webster, Inc.$434K
- Medical Device Business Services, Inc.$11K
- Acutus Medical, Inc.$1K
- Gilead$27
Across 22 payments — averaging $18,755 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.
- Biosense Webster, Inc.$298K
- Medtronic$115K
What the payments were for
- Royalty or licence$421,85795%
- Consulting fees$22,0805%
- Travel & lodging$1,6990%
- Food & beverage$2870%
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 |
|---|---|---|
| Biosense Webster, Inc. | 32 | $433,533 |
| Medical Device Business Services, Inc. | 6 | $10,963 |
| Acutus Medical, Inc. | 2 | $1,400 |
| Gilead | 1 | $27 |
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.
- Carto CFAE$100,737
- Carto 3$51,655
- Carto 3 System$22,405
- Neuwave$14,000
- Carto Smarttouch$3,500
- CartoSound$3,500
How this compares
$445,923 in reported general payments places this provider in the 95th percentile of 290 clinical cardiac electrophysiology providers in California.
See all clinical cardiac electrophysiology providers in California →
Other clinical cardiac electrophysiology in Los Angeles
- Leslie SaxonLos Angeles$1.1M
- Rahul DoshiLos Angeles$469K
- Ivan HoLos Angeles$294K
- Eric BuchLos Angeles$213K
- Carlos MaciasLos Angeles$160K
- Olujimi AjijolaLos Angeles$159K
- Justin HayaseLos Angeles$100K
- Omar YasinLos Angeles$87K
- Shephal DoshiSanta Monica$2.1M
- Jonathan HsuSan Diego$1.2M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.