Kenneth Mackinlay, MD
Orthopaedic Surgery of the Spine · Madison, INNPI 1689093940
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $27,160 of the $32,283 with a category attached, or 84.1%. 15 manufacturers reported payments, led by Alphatec Spine, Inc at 36.9% of the total. Reporting peaked in 2019 at $12,621 and has fallen 81.8% since, to $2,302 in 2025.
Across 103 payments — averaging $313.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alphatec Spine, Inc$12K
- Medacta USA, Inc.$10K
- Advanced Orthopaedic Solutions, Inc.$3K
- Cerapedics Inc.$2K
- Medtronic$2K
- Stryker$1K
- plus $1K from 9 others
What the payments were for
- Travel & lodging$27,16084%
- Food & beverage$4,74815%
- Education$3751%
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 |
|---|---|---|
| Alphatec Spine, Inc | 21 | $11,908 |
| Medacta USA, Inc. | 10 | $10,396 |
| Advanced Orthopaedic Solutions, Inc. | 4 | $3,299 |
| Cerapedics Inc. | 21 | $2,306 |
| Medtronic | 16 | $1,735 |
| Stryker | 12 | $1,435 |
| Medical Device Business Services, Inc. | 9 | $879 |
| Orthofix Medical, Inc. | 1 | $144 |
| Si-bone, Inc. | 3 | $54 |
| Augmedics Inc. | 1 | $44 |
| Johnson & Johnson | 1 | $21 |
| MF MED | 1 | $18 |
| Acell, Inc. | 1 | $18 |
| Bone Support Inc. | 1 | $15 |
| Viiv Healthcare Company | 1 | $13 |
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.
- Other - Miscellaneous$11,018
- MYSPINE$10,197
- AOS PRODUCTS$3,299
- I-FACTOR PEPTIDE ENHANCED BONE GRAFT$2,070
- EVEREST SPINAL SYSTEM$872
- EXPEDIUM$771
- O-ARM-ST$611
- MazorX - Renaissance$325
- NONE$245
- StealthStation$167
- M6-C$144
- ZEVO$141
- PRESTIGE$138
- NEW PRODUCT DEVELOPMENT$120
- GRAFTON$115
- Invictus MIS$108
How this compares
$32,283 in reported general payments places this provider in the 55th percentile of 48 orthopaedic surgery of the spine providers in Indiana.
See all orthopaedic surgery of the spine 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 |
|---|---|---|
| Gabapentin | 177 | $1,555 |
| Meloxicam | 59 | $866 |
| Methocarbamol | 46 | $397 |
| Cyclobenzaprine Hcl | 23 | $382 |
| Pregabalin | 17 | $279 |
| Baclofen | 15 | $208 |
| Oxycodone Hcl | 27 | $173 |
| Celecoxib | 12 | $155 |
| Methylprednisolone | 26 | $154 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 18 | $141 |
| Prednisone | 26 | $141 |
| Diclofenac Sodium | 18 | $121 |
| Tramadol Hcl | 21 | $49 |
| Diazepam | 15 | $18 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery of the spine in Madison
- Rick SassoCarmel$1.6M
- David SchwartzIndianapolis$1.5M
- Zeshan HyderCrown Point$1.1M
- Gregory PoulterIndianapolis$995K
- Nitin KhannaMunster$702K
- Michael McMainsIndianapolis$686K
- Mohammad MajdNew Albany$504K
- Deepak ReddySouth Bend$496K
- Paul KraemerCarmel$276K
- Dwight TyndallCrown Point$271K
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.