James Maddux, MD
Interventional Cardiology · Missoula, MTNPI 1942237326
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (35.9%), travel and lodging and consulting fees — rather than concentrated in one kind of arrangement. Abbott accounts for 66.2% of it on its own, with 10 other manufacturers making up the rest. Reporting peaked in 2024 at $8,587 and has fallen 76.7% since, to $2,003 in 2025.
Across 262 payments — averaging $99.24 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Abbott$17K
- Edwards Lifesciences$4K
- Medtronic$2K
- Boston Scientific$1K
- Abiomed$362
- Shockwave Medical, Inc$185
- plus $192 from 5 others
Across 171 payments — averaging $2423.81 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.
- Edwards Lifesciences$211K
- Abbott$138K
- Medtronic$51K
- Boston Scientific$15K
What the payments were for
- Consulting fees$8,30032%
- Travel & lodging$8,35432%
- Food & beverage$9,33536%
- Education$120%
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 |
|---|---|---|
| Abbott | 119 | $17,215 |
| Edwards Lifesciences | 37 | $4,291 |
| Medtronic(2 entities) | 56 | $2,414 |
| Boston Scientific | 27 | $1,344 |
| Abiomed | 7 | $362 |
| Shockwave Medical, Inc | 7 | $185 |
| Asahi Intecc USA, Inc. | 2 | $90 |
| Chiesi USA, Inc. | 3 | $50 |
| Angiodynamics, Inc. | 2 | $28 |
| Regeneron Healthcare Solutions, Inc. | 1 | $12 |
| Cardiovascular Systems Inc. | 1 | $11 |
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.
- MitraClip$7,235
- DRAGONFLY OPSTAR$1,800
- OPTIS$1,750
- Mitra Clip system$1,733
- TRICLIP$1,050
- Edwards SAPIEN 3 Transcatheter Heart Valve$825
- PASCAL$735
- Edwards SAPIEN 3 Ultra Transcatheter Heart Valve$653
- GENERAL - THERAPIES$523
- COREVALVE EVOLUT R$286
- Simulus$170
- Avalus$165
- GENERAL - STENTS$135
- CoreValve Evolut$132
- Impella$129
- HARMONY$122
- RESOLUTE ONYX$113
- AMPLATZER Occluders$108
- Mosaic$105
- GENERAL - STRUCTURAL HEART$105
How this compares
$26,001 in reported general payments places this provider in the 65th percentile of 22 interventional cardiology providers in Montana.
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 |
|---|---|---|
| CamzyosMavacamten | 16 | $124,021 |
| EliquisApixaban | 100 | $102,639 |
| Repatha SureclickEvolocumab | 43 | $48,957 |
| XareltoRivaroxaban | 12 | $18,443 |
| Atorvastatin Calcium | 281 | $3,645 |
| Metoprolol Succinate | 162 | $2,813 |
| ClopidogrelClopidogrel Bisulfate | 166 | $2,113 |
| Prasugrel Hcl | 34 | $1,753 |
| Lisinopril | 156 | $1,283 |
| Losartan Potassium | 122 | $1,267 |
| Isosorbide Mononitrate ErIsosorbide Mononitrate | 87 | $1,157 |
| Potassium Chloride | 42 | $1,084 |
| Carvedilol | 93 | $927 |
| Rosuvastatin Calcium | 100 | $892 |
| Furosemide | 122 | $755 |
Paid to pharmacies, not to this prescriber.
Other interventional cardiology in Missoula
- Daniel SpoonMissoula$58K
- Mark SanzMissoula$2K
- Steven GoldbergGreat Falls$134K
- Robert MinorBillings$46K
- Michael EisenhauerGreat Falls$46K
- Joshua VogtKalispell$41K
- Claudia Lama von BuchwaldBillings$29K
- Per SommerBillings$27K
- Robert TerryBillings$12K
- William HullButte$9K
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.