Louis Chi, DPM
Foot Surgery · Darien, ILNPI 1699744060
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $1,320 of the $2,021 with a category attached, or 65.3%. Treace Medical Concepts, Inc. accounts for 66.2% of it on its own, with 14 other manufacturers making up the rest. Reporting peaked in 2024 at $1,517 and has fallen 95.8% since, to $63 in 2025.
Across 33 payments — averaging $61.24 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Treace Medical Concepts, Inc.$1K
- Paratek Pharmaceuticals, Inc.$172
- Smith+Nephew$171
- Kowa Pharmaceuticals America, Inc.$70
- Organogenesis Inc.$52
- Journey Medical Corporation$42
- plus $174 from 9 others
What the payments were for
- Travel & lodging$1,32065%
- Food & beverage$70135%
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 |
|---|---|---|
| Treace Medical Concepts, Inc. | 3 | $1,339 |
| Paratek Pharmaceuticals, Inc. | 4 | $172 |
| Smith+Nephew | 6 | $171 |
| Kowa Pharmaceuticals America, Inc. | 5 | $70 |
| Organogenesis Inc. | 3 | $52 |
| Journey Medical Corporation | 3 | $42 |
| Zimmer Biomet | 1 | $30 |
| Convatec Inc. | 1 | $26 |
| Biowound Solutions, Inc. | 1 | $23 |
| Reprise Biomedical, Inc. | 1 | $21 |
| Abbott | 1 | $18 |
| Next Science LLC | 1 | $16 |
| Sebela Pharmaceuticals Inc. | 1 | $16 |
| Axogen | 1 | $12 |
| Polynovo North America LLC | 1 | $12 |
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.
- Lapiplasty System$1,320
- NUZYRA$122
How this compares
$2,021 in reported general payments places this provider in the 65th percentile of 51 foot surgery providers in Illinois.
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 |
|---|---|---|
| CiclopiroxCiclopirox Olamine | 31 | $1,062 |
| Ketoconazole | 28 | $683 |
| Diclofenac Sodium | 74 | $510 |
| Gabapentin | 38 | $507 |
| Pregabalin | 14 | $252 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 17 | $147 |
| Methylprednisolone | 16 | $106 |
Paid to pharmacies, not to this prescriber.
Other foot surgery in Darien
- Jeeten SinghaWestmont$14K
- Christopher AndersonO'Fallon$13K
- Stephanie WuNorth Chicago$7K
- Jillian CabaiChicago$7K
- William FinnOak Park$5K
- Jeremiah BushmakerGalesburg$5K
- Cory JacobyElgin$4K
- Syed HussainHoffman Estates$4K
- Edward UramDowners Grove$4K
- Mary OlszewskiPalatine$3K
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.