Leng Xiong, DPM
Foot & Ankle Surgery · Pewaukee, WINPI 1376160366
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (51.4%), education and travel and lodging — rather than concentrated in one kind of arrangement. 25 manufacturers reported payments, led by Mid-atlantic Surgical Systems, LLC at 26.5% of the total. Reporting peaked in 2024 at $2,196 and has fallen 63.7% since, to $798 in 2025.
Across 107 payments — averaging $86.54 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Mid-atlantic Surgical Systems, LLC$2K
- Enduromed, LLC$1K
- Arthrex$1K
- Smith+Nephew$1K
- Kerecis Limited$922
- Stryker$452
- plus $2K from 19 others
What the payments were for
- Travel & lodging$2,10123%
- Food & beverage$4,75851%
- Education$2,40026%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Mid-atlantic Surgical Systems, LLC | 4 | $2,454 |
| Enduromed, LLC | 8 | $1,461 |
| Arthrex | 12 | $1,370 |
| Smith+Nephew | 35 | $1,063 |
| Kerecis Limited | 9 | $922 |
| Stryker | 5 | $452 |
| Misonix Inc | 4 | $362 |
| Treace Medical Concepts, Inc. | 1 | $273 |
| Fusion Orthopedics USA, LLC | 5 | $160 |
| Flower Orthopedics Coporation | 2 | $93 |
| Zimmer Biomet | 1 | $90 |
| Johnson & Johnson | 2 | $89 |
| Mimedx Group, Inc. | 3 | $78 |
| Bioventus LLC | 2 | $66 |
| Integra Lifesciences Corporation | 1 | $51 |
| Paratek Pharmaceuticals, Inc. | 3 | $51 |
| Urgo Medical North America, LLC | 1 | $37 |
| Medtronic | 1 | $33 |
| Polynovo North America LLC | 2 | $31 |
| ANI Pharmaceuticals, Inc. | 1 | $30 |
| Solventum Corporation | 1 | $22 |
| Averitas Pharma Inc. | 1 | $21 |
| Davol Inc. | 1 | $20 |
| KCI USA, Inc. | 1 | $15 |
| Neurocrine Biosciences, Inc. | 1 | $15 |
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.
- Kerecis Omega3 Marigen$1,379
- Kerecis SurgiClose$1,012
- Kerecis Omega3 SurgiClose$820
- Kerecis Omega3 GraftGuide$415
- STRAVIX PL$283
- Lapiplasty System$273
- Kerecis GraftGuide$253
- GRAFIX PL$148
- STRAVIX MESH$148
- OASIS MICRO$148
- ANCHORAGE$138
- PROPHECY$138
- ORTHOLOC 3DI CROSSCHECK$127
How this compares
$9,260 in reported general payments places this provider in the 75th percentile of 105 foot & ankle surgery providers in Wisconsin.
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 |
|---|---|---|
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 76 | $1,041 |
| Methylprednisolone | 22 | $138 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 16 | $81 |
Paid to pharmacies, not to this prescriber.
Other foot & ankle surgery in Pewaukee
- Anton SellaPewaukee$5K
- James VavraPewaukee$4K
- Tyler VeldkampPewaukee$2K
- Mitch HulbertSheboygan$96K
- James WhelanBeloit$51K
- Nikita GramaStevens Point$31K
- Keith AndersonHayward$31K
- Jay ChristensenAppleton$26K
- Jason BurkleMadison$26K
- Hui ZhangOak Creek$25K
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.