Stephen Kalhorn, MD
Neurological Surgery · Charleston, SCNPI 1235333022
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (39.6%), food and beverage and travel and lodging — rather than concentrated in one kind of arrangement. 8 manufacturers reported payments, led by Surgalign Spine Technologies, Inc. at 39.6% of the total. Reporting peaked in 2019 at $835 and has fallen 80.2% since, to $165 in 2025. That places this record below the midpoint for neurological surgery clinicians in SC, where the typical reported total is $2,843.
Across 19 payments — averaging $99.59 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Surgalign Spine Technologies, Inc.$750
- Integrity Implants Inc.$451
- Medtronic$438
- Cerapedics Inc.$99
- Sivantage, Inc.$73
- Kuros Biosciences USA, Inc$49
- plus $33 from 2 others
Across 1 payment — averaging $475.00 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.
- Surgalign Spine Technologies, Inc.$475
What the payments were for
- Consulting fees$75040%
- Travel & lodging$30816%
- Food & beverage$69137%
- Education$995%
- Gifts$442%
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 |
|---|---|---|
| Surgalign Spine Technologies, Inc. | 1 | $750 |
| Integrity Implants Inc. | 8 | $451 |
| Medtronic | 5 | $438 |
| Cerapedics Inc. | 1 | $99 |
| Sivantage, Inc. | 1 | $73 |
| Kuros Biosciences USA, Inc | 1 | $49 |
| Stryker | 1 | $17 |
| Corelink, LLC | 1 | $16 |
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
$1,892 in reported general payments places this provider in the 35th percentile of 114 neurological 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.
Other neurological surgery in Charleston
- Alejandro SpiottaCharleston$894K
- Jonathan LenaCharleston$110K
- Matthew NealCharleston$65K
- Ramin EskandariCharleston$22K
- Istvan TakacsCharleston$13K
- Nathan RowlandCharleston$13K
- Robert StuartCharleston$10K
- Clayton HaldemanCharleston$9K
- Brian CuddyCharleston$9K
- George KhouryCharleston$8K
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.