James Callahan, MD
Neurological Surgery · Anderson, INNPI 1750311098
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (59.4%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. Medtronic accounts for 98.5% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2019 at $14,059 and has fallen 96.3% since, to $515 in 2025.
Across 28 payments — averaging $592.62 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$16K
- Arteriocyte Medical Systems, Inc.$127
- Johnson & Johnson$71
- AbbVie$46
- GSK$12
What the payments were for
- Consulting fees$3,96524%
- Speaking & faculty fees$9,86059%
- Travel & lodging$1,69510%
- Food & beverage$1,0736%
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) | 22 | $16,337 |
| Arteriocyte Medical Systems, Inc. | 1 | $127 |
| Johnson & Johnson | 2 | $71 |
| AbbVie | 2 | $46 |
| GSK | 1 | $12 |
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.
- CD HORIZON$13,552
- O-ARM-ST$870
- MAZOR X SYSTEM$459
- CLYDESDALE$340
- METRx$290
- Endoskeleton-L$153
- VECTRIS$128
- Magellan$127
- UNID_PASS$127
- T2 ALTITUDE$121
How this compares
$16,593 in reported general payments places this provider in the 80th percentile of 112 neurological surgery 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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 87 | $844 |
| Dexamethasone | 31 | $283 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 31 | $219 |
| Methocarbamol | 40 | $166 |
| Meloxicam | 30 | $126 |
| Gabapentin | 13 | $111 |
| Tramadol Hcl | 14 | $60 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Anderson
- Richard KimAnderson$47K
- Jean-Pierre MobasserCarmel$3.5M
- Troy PaynerCarmel$803K
- Michael TurnerIndianapolis$522K
- Eric PottsCarmel$345K
- Souheil HaddadBloomington$161K
- Mitesh ShahIndianapolis$133K
- Bradley BohnstedtIndianapolis$122K
- Daniel FulkersonSouth Bend$92K
- David StockwellIndianapolis$75K
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.