Zahab Ahsan, MD
Sports Medicine · Naperville, ILNPI 1629497045
Payments from drug & device makers
What this record shows
This record is dominated by education: $20,885 of the $23,828 with a category attached, or 87.6%. 14 manufacturers reported payments, led by Medwest Associates at 55.9% of the total. Reporting peaked in 2020 at $10,600 and has fallen 90.5% since, to $1,003 in 2025.
Across 48 payments — averaging $496.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medwest Associates$13K
- Smith+Nephew$8K
- Exactech, Inc.$557
- Stryker$550
- Arthrex$455
- Johnson & Johnson$224
- plus $390 from 8 others
What the payments were for
- Travel & lodging$4552%
- Food & beverage$2,48810%
- Education$20,88588%
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 |
|---|---|---|
| Medwest Associates | 16 | $13,311 |
| Smith+Nephew | 5 | $8,340 |
| Exactech, Inc. | 2 | $557 |
| Stryker | 10 | $550 |
| Arthrex | 1 | $455 |
| Johnson & Johnson(2 entities) | 3 | $224 |
| Encore Medical, LP | 1 | $147 |
| Vericel Corporation | 4 | $87 |
| Abbott | 1 | $48 |
| Catalyst Orthoscience | 1 | $31 |
| Bioventus LLC | 1 | $22 |
| Pacira Therapeutics, Inc. | 1 | $20 |
| Linvatec Corporation | 1 | $18 |
| Oak Med, Inc. | 1 | $18 |
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.
How this compares
$23,828 in reported general payments places this provider in the 80th percentile of 233 sports medicine 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 |
|---|---|---|
| Meloxicam | 72 | $109 |
| Methylprednisolone | 16 | $73 |
| Oxycodone Hcl | 13 | $34 |
| Tramadol Hcl | 14 | $23 |
Paid to pharmacies, not to this prescriber.
Other sports medicine in Naperville
- Benjamin DombDes Plaines$16.3M
- Gregory NicholsonChicago$6.7M
- Grant GarriguesChicago$2.5M
- Brian ColeChicago$2.1M
- Brian ForsytheChicago$1.9M
- Nikhil VermaChicago$647K
- Shane NhoChicago$521K
- Jourdan CancienneJoliet$224K
- Vehniah TjongChicago$173K
- Aravind AthivirahamChicago$138K
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.