Gregory Keller, MD
Orthopaedic Surgery of the Spine · Jacksonville, FLNPI 1285638965
Payments from drug & device makers
Across 53 payments — averaging $68.20 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$1K
- The Institute Of Musculoskeletal Science And Education$896
- Camber Spine Technologies LLC$336
- Alphatec Spine, Inc$262
- Si-bone, Inc.$252
- Centinel Spine, LLC$176
- plus $662 from 12 others
What the payments were for
- Consulting fees$89625%
- Travel & lodging$1324%
- Food & beverage$2,42667%
- Education$1604%
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 |
|---|---|---|
| Medtronic(2 entities) | 19 | $1,030 |
| The Institute Of Musculoskeletal Science And Education | 2 | $896 |
| Camber Spine Technologies LLC | 5 | $336 |
| Alphatec Spine, Inc | 2 | $262 |
| Si-bone, Inc. | 4 | $252 |
| Centinel Spine, LLC | 5 | $176 |
| Corelink, LLC | 1 | $136 |
| Medical Device Business Services, Inc. | 1 | $113 |
| Providence Medical Technology, Inc. | 2 | $83 |
| Bioventus LLC | 3 | $80 |
| Zimvie Inc. | 1 | $74 |
| Highridge Medical LLC | 1 | $45 |
| Innovation Technologies Inc | 2 | $30 |
| Vertex | 1 | $22 |
| Johnson & Johnson | 1 | $22 |
| Orthofix Medical, Inc. | 1 | $19 |
| CSL Behring | 1 | $19 |
| Cerapedics Inc. | 1 | $19 |
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.
- MAZOR X SYSTEM$173
- nanoLOCK-L$161
- MazorX - Renaissance$121
- EXPAREL$113
- STALIF C FLX$106
How this compares
$3,614 in reported general payments places this provider in the 25th percentile of 159 orthopaedic surgery of the spine providers in Florida.
See all orthopaedic surgery of the spine providers in Florida →
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 | 89 | $946 |
| Pregabalin | 23 | $423 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 36 | $253 |
| Methylprednisolone | 23 | $167 |
| Tramadol Hcl | 55 | $161 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 14 | $118 |
| Methocarbamol | 18 | $111 |
| Diazepam | 29 | $22 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery of the spine in Jacksonville
- Harry ShufflebargerMiami$3.5M
- Paul KellerMelbourne$3.4M
- Thomas SweeneySarasota$2.3M
- Geoffrey CronenTampa$2.2M
- James BillysOdessa$1.9M
- Samuel JosephSafety Harbor$1.8M
- Mark DekutoskiDestin$1.8M
- Farhan SiddiqiOdessa$1.7M
- Thomas ErricoMiami$1.6M
- Constantine ToumbisCrystal River$1.6M
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.