Charles Opalak, MD
Neurological Surgery · Greenville, SCNPI 1821484882
Payments from drug & device makers
What this record shows
Globus Medical accounts for 66.1% of it on its own, with 6 other manufacturers making up the rest. Reporting peaked in 2022 at $1,481 and has fallen 90.9% since, to $135 in 2025. That places this record below the midpoint for neurological surgery clinicians in SC, where the typical reported total is $2,843.
Across 23 payments — averaging $86.99 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Globus Medical$1K
- Medtronic$422
- Providence Medical Technology, Inc.$137
- Kyocera Medical Technologies, Inc.$56
- Livanova USA, Inc.$31
- Innovation Technologies Inc$16
- plus $15 from 1 others
Across 9 payments — averaging $10,167 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.
- Pramand LLC$92K
What the payments were for
- Travel & lodging$87944%
- Food & beverage$1,12156%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Globus Medical(2 entities) | 10 | $1,323 |
| Medtronic | 5 | $422 |
| Providence Medical Technology, Inc. | 2 | $137 |
| Kyocera Medical Technologies, Inc. | 2 | $56 |
| Livanova USA, Inc. | 2 | $31 |
| Innovation Technologies Inc | 1 | $16 |
| Monteris Medical Corporation | 1 | $15 |
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.
- CREO$424
- Excelsius Robotics System$424
- XLIF$224
- STEALTHSTATION S8 PLATFORM$155
- MAZOR X SYSTEM$143
- Sable$102
How this compares
$2,001 in reported general payments places this provider in the 40th 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Pregabalin | 11 | $777 |
| Oxycodone Hcl | 102 | $388 |
| Gabapentin | 21 | $259 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 25 | $204 |
| Methocarbamol | 25 | $132 |
| Tizanidine Hcl | 21 | $86 |
| Tramadol Hcl | 12 | $30 |
| Diazepam | 33 | $22 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Greenville
- Jan Vargas MachajGreenville$207K
- James WigintonGreenville$18K
- Tyler SparksGreenville$16K
- Christie MinaGreenville$13K
- Samuel AsanteGreenville$12K
- Phillip HodgeGreenville$10K
- Sharon WebbGreenville$5K
- Earl TroupGreenville$3K
- Alejandro SpiottaCharleston$894K
- David JonesRock Hill$540K
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.