John Depowell, MD
Neurological Surgery · Carmel, INNPI 1467663757
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (58.0%), speaking fees and food and beverage — rather than concentrated in one kind of arrangement. Medtronic accounts for 96.5% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2019 at $4,444 and has fallen 95.3% since, to $209 in 2025.
Across 44 payments — averaging $332.20 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$14K
- Icotec Medical Inc.$299
- Stryker$110
- Johnson & Johnson$59
- Zimmer Biomet$23
- CSL Behring$20
What the payments were for
- Consulting fees$8,48058%
- Speaking & faculty fees$4,06028%
- Food & beverage$2,05714%
- Education$200%
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) | 31 | $14,106 |
| Icotec Medical Inc. | 2 | $299 |
| Stryker | 7 | $110 |
| Johnson & Johnson | 2 | $59 |
| Zimmer Biomet | 1 | $23 |
| CSL Behring | 1 | $20 |
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.
- INFINITY OCT System$4,060
- CD HORIZON$2,900
- ELEVATE SPINAL SYSTEM$2,647
- UNID_PASS$1,624
- MIDAS REX$620
- StealthStation$257
- STEALTHSTATION S8 PLATFORM$172
- icotec BlackArmor Spine System$166
- VADER PEDICLE SYSTEM 6.0, SCREW, Carbon/PEEK, POLYAX., FEN., O 5.5 X 45 MM$133
- KONG-TL VBR E, EXPANDABLE BODY, L, 19 MM X 27 - 37 MM$133
- KONG-TL VBR, END PLATE, RECTANGULAR, M AND SCREW, 12 X 33 MM$133
- VADER PEDICLE SYSTEM, ROD, Carbon/PEEK, CURVED, 6.0 R450 X 200 MM$133
- KONG-TL VBR, END PLATE, ROUND, L AND SCREW, 12 X 43 MM$133
How this compares
$14,617 in reported general payments places this provider in the 75th 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 |
|---|---|---|
| Gabapentin | 70 | $623 |
| Methylprednisolone | 32 | $164 |
| Tizanidine Hcl | 31 | $134 |
| Cyclobenzaprine Hcl | 14 | $62 |
| Meloxicam | 14 | $23 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Carmel
- Jean-Pierre MobasserCarmel$3.5M
- Troy PaynerCarmel$803K
- Eric PottsCarmel$345K
- Richard RodgersCarmel$45K
- Shahjehan AhmadCarmel$15K
- Charles KulwinCarmel$10K
- Daniel KimCarmel$7K
- Kenneth RenkensCarmel$7K
- Saad KhairiCarmel$6K
- Michael TurnerIndianapolis$522K
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.