Joon Ahn, MD
Hand Surgery · Mount Vernon, ILNPI 1083681027
Payments from drug & device makers
What this record shows
This record is dominated by education: $4,438 of the $6,242 with a category attached, or 71.1%. 11 manufacturers reported payments, led by Elite Orthopedics, LLC at 46.8% of the total. Reporting peaked in 2019 at $5,063 and has fallen 95.1% since, to $250 in 2025.
Across 41 payments — averaging $152.25 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Elite Orthopedics, LLC$3K
- Arthrex$2K
- Abbott$731
- Amgen$191
- Acumed LLC$58
- Pacira Therapeutics, Inc.$38
- plus $78 from 5 others
What the payments were for
- Travel & lodging$1,11718%
- Food & beverage$68811%
- Education$4,43871%
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 |
|---|---|---|
| Elite Orthopedics, LLC | 3 | $2,919 |
| Arthrex | 15 | $2,227 |
| Abbott | 5 | $731 |
| Amgen | 10 | $191 |
| Acumed LLC | 1 | $58 |
| Pacira Therapeutics, Inc. | 2 | $38 |
| Medtronic | 1 | $22 |
| Orthofix Medical, Inc. | 1 | $16 |
| Pacira Pharmaceuticals Incorporated | 1 | $14 |
| Medline Industries LP | 1 | $13 |
| Olympus America Inc. | 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.
- AMPLATZER$706
How this compares
$6,242 in reported general payments places this provider in the 70th percentile of 121 hand 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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 95 | $964 |
| Ondansetron Hcl | 96 | $335 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 18 | $304 |
Paid to pharmacies, not to this prescriber.
Other hand surgery in Mount Vernon
- Jeffrey VisotskyMorton Grove$1.1M
- Robert GraySkokie$422K
- Robert CoatsTinley Park$408K
- Randipsingh BindraMaywood$297K
- Jonathan TuetingAurora$190K
- Mark CohenChicago$78K
- Jeffrey StepanChicago$71K
- Leon BensonGlenview$62K
- Debdut BiswasWarrenville$56K
- Eric PerezChicago$42K
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.