Mathew Walker, MD
Hand Surgery · Greenwood, INNPI 1508123027
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $15,095 of the $16,777 with a category attached, or 90.0%. Encore Medical, LP accounts for 92.8% of it on its own, with 6 other manufacturers making up the rest. 2025 is the largest year on record at $9,698, more than ten times the $776 reported in 2019.
Across 40 payments — averaging $419.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Encore Medical, LP$16K
- Stryker$962
- Axogen$180
- Dynasplint Systems Inc.$19
- MF MED$18
- Johnson & Johnson$17
- plus $11 from 1 others
What the payments were for
- Travel & lodging$15,09590%
- Food & beverage$9866%
- Gifts$6964%
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 |
|---|---|---|
| Encore Medical, LP | 30 | $15,571 |
| Stryker(2 entities) | 5 | $962 |
| Axogen | 1 | $180 |
| Dynasplint Systems Inc. | 1 | $19 |
| MF MED | 1 | $18 |
| Johnson & Johnson | 1 | $17 |
| Arthrosurface Incorporated | 1 | $11 |
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.
- DJO SURGICAL$25,880
- Ascend Flex$696
- AVANCE NERVE GRAFT$180
- TORNIER PERFORM REVERSED GLENOID$156
How this compares
$16,777 in reported general payments places this provider in the 85th percentile of 60 hand surgery providers in Indiana.
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 | 57 | $455 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 17 | $167 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 12 | $41 |
| Meloxicam | 15 | $28 |
Paid to pharmacies, not to this prescriber.
Other hand surgery in Greenwood
- Christy KellamsGreenwood$4K
- Robert FalenderGreenwood$1K
- Kelly GranerGreenwood$152
- Adelbert MenciasSouth Bend$172K
- Brandon SmetanaIndianapolis$136K
- Jeffrey GreenbergIndianapolis$121K
- Reed HoyerIndianapolis$110K
- Paul PerryEvansville$44K
- Nicholas CrosbyIndianapolis$18K
- Brett SchiffmanMunster$12K
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.