Isaac Karikari, MD
Neurological Surgery · Oklahoma City, OKNPI 1497891717
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $94,342 of the $137,002 with a category attached, or 68.9%. 17 manufacturers reported payments, led by Globus Medical at 56.7% of the total. Reporting peaked in 2019 at $34,329 and has fallen 84.8% since, to $5,222 in 2025. Among neurological surgery clinicians in OK with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 256 payments — averaging $535.17 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Globus Medical$78K
- Medtronic$26K
- Medical Device Business Services, Inc.$13K
- Depuy Synthes Products, Inc.$13K
- Alphatec Spine, Inc$2K
- Spineology Inc.$2K
- plus $4K from 11 others
Across 16 payments — averaging $4892.85 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.
- Cerapedics Inc.$53K
- Globus Medical$25K
What the payments were for
- Consulting fees$94,34269%
- Speaking & faculty fees$5,3004%
- Travel & lodging$33,65225%
- Food & beverage$3,4583%
- Education$2500%
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) | 152 | $77,647 |
| Medtronic(2 entities) | 37 | $25,547 |
| Medical Device Business Services, Inc. | 7 | $13,064 |
| Depuy Synthes Products, Inc. | 19 | $12,929 |
| Alphatec Spine, Inc | 8 | $2,123 |
| Spineology Inc. | 2 | $1,804 |
| Stryker | 9 | $1,455 |
| Medicrea USA, Corp. | 6 | $1,138 |
| Si-bone, Inc. | 3 | $780 |
| Acuity Surgical Devices, LLC | 2 | $203 |
| Johnson & Johnson(2 entities) | 5 | $177 |
| Innovation Technologies Inc | 1 | $24 |
| Catalyst Pharmaceuticals, Inc. | 1 | $24 |
| Pacira Pharmaceuticals Incorporated | 1 | $24 |
| Avion Pharmaceuticals | 1 | $23 |
| Integra Lifesciences Corporation | 1 | $20 |
| Orthofix Medical, 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.
- SYMPHONY$18,882
- CONDUIT$18,882
- CD HORIZON$14,811
- NAVIGATION$13,546
- NexGen MIS$13,494
- CD HORIZON SPINAL SYSTEM$9,674
- Modulus$8,688
- TLIF$8,205
- XLIF$8,192
- Spine & Trauma 3D Navigation$6,521
- CREO$5,755
- Other - Miscellaneous$2,016
- OPTIMESH EXPANDABLE INTERBODY FUSION SYSTEM$1,761
- ExcelsiusGPS Robotic Navigation System$1,404
- EVEREST SPINAL SYSTEM$1,264
- EXPEDIUM$1,185
- PASS-LP$1,073
- UNiD$1,073
- Excelsius - GPS$524
- CREO 6.35 Threaded$425
How this compares
$137,002 in reported general payments places this provider in the 90th percentile of 80 neurological surgery providers in Oklahoma.
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 |
|---|---|---|
| Mupirocin | 14 | $121 |
| Oxycodone Hcl | 23 | $117 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Oklahoma City
- Brian SnellOklahoma City$3.7M
- Fadi NasrOklahoma City$1.6M
- Robert TibbsOklahoma City$537K
- Michael HahnOklahoma City$267K
- Joseph CoxOklahoma City$123K
- Hakeem ShakirOklahoma City$63K
- Robert WieneckeOklahoma City$40K
- Muhammad JanjuaOklahoma City$33K
- Caple SpenceOklahoma City$31K
- Andrew ConnerOklahoma City$28K
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.