John Marshall, MD
Interventional Cardiology · Atlanta, GANPI 1184676413
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $8,411 of the $10,405 with a category attached, or 80.8%. It is spread thinly across 38 manufacturers, the largest accounting for just 19.8% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2023 at $2,617 and has fallen 60.9% since, to $1,024 in 2025.
Across 175 payments — averaging $59.45 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Philips North America LLC$2K
- Medtronic$1K
- Abbott$1K
- Abiomed$824
- Boston Scientific$792
- Biotronik Inc.$447
- plus $4K from 32 others
Across 9 payments — averaging $3772.40 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.
- Abbott$29K
- Shockwave Medical, Inc$5K
What the payments were for
- Travel & lodging$1,98119%
- Food & beverage$8,41181%
- Education$130%
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 |
|---|---|---|
| Philips North America LLC | 4 | $2,062 |
| Medtronic(2 entities) | 19 | $1,281 |
| Abbott | 9 | $1,020 |
| Abiomed | 9 | $824 |
| Boston Scientific | 15 | $792 |
| Biotronik Inc. | 4 | $447 |
| Siemens Medical Solutions USA, Inc. | 3 | $439 |
| Pfizer | 18 | $373 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 10 | $324 |
| Amgen | 15 | $270 |
| Cvrx, Inc. | 3 | $245 |
| Heartflow, Inc. | 3 | $201 |
| AstraZeneca | 5 | $184 |
| Inari Medical, Inc. | 1 | $183 |
| La Jolla Pharmaceutical Company | 3 | $176 |
| Novartis | 9 | $175 |
| Scpharmaceuticals Inc. | 2 | $160 |
| Shockwave Medical, Inc | 1 | $160 |
| Johnson & Johnson | 12 | $155 |
| Novo Nordisk | 4 | $152 |
| E.r. Squibb & Sons, L.L.C. | 2 | $130 |
| Cleerly, Inc. | 1 | $107 |
| GE HealthCare | 2 | $88 |
| Kestra Medical Technology Services, Inc. | 2 | $57 |
| Angiodynamics, Inc. | 1 | $47 |
| Inspire Medical Systems, Inc. | 2 | $44 |
| Merck | 2 | $43 |
| Chiesi USA, Inc. | 3 | $42 |
| Lantheus Medical Imaging, Inc. | 2 | $41 |
| Edwards Lifesciences | 1 | $25 |
| Kiniksa Pharmaceuticals, Ltd. | 1 | $24 |
| Itamar Medical Inc | 1 | $24 |
| Bridgebio Pharma, Inc. | 1 | $23 |
| Sanofi-aventis U.S. LLC | 1 | $23 |
| Actelion Pharmaceuticals US, Inc. | 1 | $20 |
| Esperion Therapeutics, Inc. | 1 | $19 |
| Medicure Pharma Inc. | 1 | $13 |
| Altathera Pharmaceuticals LLC | 1 | $10 |
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.
- (9547) IGT Systems Undivided$1,555
- Impella$566
- IGT Systems Und$425
- FLOWTRIEVER CATHETER, S$367
- CorPath Imaging System$294
- Orsiro Mission$275
- CoreValve Evolut$250
- RESOLUTE ONYX$208
- Barostim Neo System$184
- Xience Sierra Coronary Stent System$182
- Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter$160
- BioMonitor$150
- Acticor 7 VR-T DX$150
- PK Papyrus$150
- Rivacor 7 DR-T$150
- FUROSCIX$150
- AMPLATZER AMULET$145
- Mitra Clip system$143
- Resolute$141
- FFRct$140
How this compares
$10,405 in reported general payments places this provider in the 60th percentile of 218 interventional cardiology providers in Georgia.
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 |
|---|---|---|
| EliquisApixaban | 222 | $223,503 |
| XareltoRivaroxaban | 74 | $79,292 |
| Repatha SureclickEvolocumab | 54 | $61,807 |
| EntrestoSacubitril/Valsartan | 32 | $24,540 |
| MultaqDronedarone Hcl | 22 | $22,280 |
| Repatha SyringeEvolocumab | 19 | $21,711 |
| Praluent PenAlirocumab | 17 | $8,453 |
| Metoprolol Succinate | 229 | $3,143 |
| Amiodarone Hcl | 40 | $2,384 |
| Midodrine Hcl | 17 | $1,866 |
| Ezetimibe | 92 | $1,708 |
| Losartan Potassium | 138 | $1,600 |
| Atorvastatin Calcium | 148 | $1,568 |
| Diltiazem 24hr Er (Cd)Diltiazem Hcl | 37 | $1,203 |
| Rosuvastatin Calcium | 154 | $1,022 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| PfizerEliquis | $373 | $223,503222 claims |
| Johnson & JohnsonXarelto | $155 | $79,29274 claims |
| NovartisEntresto | $175 | $24,54032 claims |
| Sanofi-aventis U.S. LLCMultaq | $23 | $22,28022 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 60th percentile of 218 interventional cardiology providers in Georgia.
Other interventional cardiology in Atlanta
- William NicholsonAtlanta$1000K
- David KandzariAtlanta$982K
- Pradeep YadavAtlanta$656K
- Adam GreenbaumAtlanta$238K
- Wissam JaberAtlanta$222K
- Katherine KunkelAtlanta$189K
- James StewartAtlanta$174K
- Pratik SandesaraAtlanta$165K
- Chandanreddy DevireddyAtlanta$121K
- Prashant KaulAtlanta$109K
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.