Kenneth Mathis, MD
Orthopaedic Surgery · Houston, TXNPI 1912940487
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (50.3%), consulting fees and food and beverage — rather than concentrated in one kind of arrangement. Smith+Nephew accounts for 83.0% of it on its own, with 19 other manufacturers making up the rest. Reporting peaked in 2022 at $24,095 and has fallen 94.2% since, to $1,401 in 2025.
Across 98 payments — averaging $531.22 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Smith+Nephew$43K
- Total Joint Orthopedics, Inc.$4K
- Exactech, Inc.$922
- Stryker$840
- Maxx Orthopedics, Inc.$714
- Orthalign Inc$507
- plus $2K from 14 others
Across 24 payments — averaging $3966.72 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Smith+Nephew$95K
What the payments were for
- Consulting fees$13,20925%
- Speaking & faculty fees$26,16650%
- Travel & lodging$5,55511%
- Food & beverage$7,01513%
- Gifts$1140%
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 |
|---|---|---|
| Smith+Nephew | 39 | $43,224 |
| Total Joint Orthopedics, Inc. | 18 | $3,689 |
| Exactech, Inc. | 5 | $922 |
| Stryker | 6 | $840 |
| Maxx Orthopedics, Inc. | 5 | $714 |
| Orthalign Inc | 3 | $507 |
| Zimmer Biomet | 3 | $381 |
| BD | 2 | $364 |
| Medacta USA, Inc. | 1 | $337 |
| Onkos Surgical, Inc. | 3 | $191 |
| Sanara Medtech Inc. | 1 | $148 |
| Microport Orthopedics Inc | 2 | $147 |
| Heron Therapeutics, Inc. | 1 | $132 |
| Engage Uni, LLC | 1 | $114 |
| Biocomposites Inc | 1 | $111 |
| Innovation Technologies Inc | 1 | $93 |
| Heraeus Medical, LLC. | 1 | $66 |
| KCI USA, Inc. | 2 | $33 |
| Next Science LLC | 2 | $30 |
| Medtronic | 1 | $17 |
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.
- Journey II$82,636
- REAL INTELLIGENCE$28,964
- OR3O Dual Mobility$13,679
- Legion$11,970
- REDAPT$11,740
- Legion Revision$10,264
- Tandem$6,383
- LEGION TKS$3,872
- MAKO$785
- OPTETRAK$607
- NOVATION HIP$607
- ORTHALIGN PLUS$507
- VISIONAIRE$461
- Channel Drain$364
- AMISTEM$337
- Engage Partial Knee System$267
- CellerateRx$148
- mymobility Platform$146
- MPO Medial Pivot Knee$139
- Hips-None$139
How this compares
$52,060 in reported general payments places this provider in the 85th percentile of 1,337 orthopaedic surgery providers in Texas.
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 | 32 | $331 |
| Mupirocin | 33 | $229 |
| Oxycodone Hcl | 23 | $167 |
| Meloxicam | 15 | $156 |
| Hydromorphone Hcl | 13 | $108 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Houston
- Stefan KreuzerHouston$6.2M
- Stephen IncavoHouston$4.3M
- Thomas EdwardsHouston$4.1M
- Adam FreedhandHouston$1.8M
- Jeffrey KozakHouston$1.1M
- Travis HansonHouston$1M
- Thomas TanousHouston$698K
- Alan RechterHouston$605K
- Ugonna IhekweazuHouston$544K
- Darrell HansonHouston$284K
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.