David Macknet, MD
Orthopaedic Surgery · Fort Mill, SCNPI 1891149910
Payments from drug & device makers
What this record shows
The money is spread across several categories — grants (55.1%), education and food and beverage — rather than concentrated in one kind of arrangement. Arthrex accounts for 73.2% of it on its own, with 10 other manufacturers making up the rest. Reporting peaked in 2022 at $15,292 and has fallen 96.7% since, to $510 in 2025.
Across 64 payments — averaging $283.82 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$13K
- Peerless Surgical Inc.$1K
- Stryker$1K
- Pylant Medical$1K
- Medical Device Business Services, Inc.$380
- Johnson & Johnson$240
- plus $268 from 5 others
What the payments were for
- Grants$10,00055%
- Travel & lodging$9055%
- Food & beverage$2,36613%
- Education$4,89427%
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 |
|---|---|---|
| Arthrex | 17 | $13,300 |
| Peerless Surgical Inc. | 9 | $1,474 |
| Stryker | 24 | $1,280 |
| Pylant Medical | 2 | $1,222 |
| Medical Device Business Services, Inc. | 2 | $380 |
| Johnson & Johnson | 4 | $240 |
| Treace Medical Concepts, Inc. | 1 | $86 |
| Kerecis Limited | 1 | $84 |
| Bioventus LLC | 2 | $45 |
| Zimvie Inc. | 1 | $35 |
| Smith+Nephew | 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.
- INFINITY$331
- PROPHECY$316
- INBONE$157
- NA$140
- AXS INFINITY LS$101
How this compares
$18,165 in reported general payments places this provider in the 80th percentile of 325 orthopaedic surgery providers in South Carolina.
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 |
|---|---|---|
| Ibuprofen | 91 | $624 |
| Gabapentin | 37 | $469 |
| Meloxicam | 243 | $464 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 65 | $334 |
| Methylprednisolone | 43 | $213 |
| Diclofenac Sodium | 14 | $121 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 24 | $114 |
| Celecoxib | 11 | $107 |
| Tramadol Hcl | 15 | $22 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Fort Mill
- Edward BrownFort Mill$38K
- Barrett LittleFort Mill$36K
- William SmithColumbia$7.7M
- Richard FrischMt Pleasant$1M
- Brent PonceCharleston$874K
- Chi LimSpartanburg$320K
- Todd LansfordNorth Charleston$286K
- Nicholas GrimaldiColumbia$203K
- Richard MarksWest Columbia$176K
- James LogingClinton$118K
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.