John Wharton, MD
Clinical Cardiac Electrophysiology · Charleston, SCNPI 1386752327
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $29,733 of the $43,633 with a category attached, or 68.1%. Sanofi-aventis U.S. LLC accounts for 86.7% of it on its own, with 8 other manufacturers making up the rest. Reporting peaked in 2019 at $19,514 and has fallen 99.0% since, to $194 in 2025.
Across 28 payments — averaging $1558.32 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sanofi-aventis U.S. LLC$38K
- Janssen Global Services, LLC$5K
- Medtronic$568
- Biosense Webster, Inc.$203
- Boston Scientific$162
- Biosig Technologies, Inc.$131
- plus $115 from 3 others
What the payments were for
- Consulting fees$29,73368%
- Speaking & faculty fees$12,68629%
- Food & beverage$1,2143%
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 |
|---|---|---|
| Sanofi-aventis U.S. LLC | 8 | $37,815 |
| Janssen Global Services, LLC | 2 | $4,640 |
| Medtronic(2 entities) | 7 | $568 |
| Biosense Webster, Inc. | 5 | $203 |
| Boston Scientific | 2 | $162 |
| Biosig Technologies, Inc. | 1 | $131 |
| Abbott | 1 | $96 |
| Boehringer Ingelheim | 1 | $14 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 1 | $5 |
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.
- MULTAQ$33,823
- Azure$238
- PURE EP$131
- Carto 3 System$119
How this compares
$43,633 in reported general payments places this provider in the 55th percentile of 58 clinical cardiac electrophysiology providers in South Carolina.
See all clinical cardiac electrophysiology providers in South Carolina →
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 | 1,071 | $1,248,358 |
| MultaqDronedarone Hcl | 520 | $693,414 |
| EntrestoSacubitril/Valsartan | 294 | $278,998 |
| XareltoRivaroxaban | 103 | $140,859 |
| JardianceEmpagliflozin | 159 | $125,594 |
| FarxigaDapagliflozin Propanediol | 129 | $105,060 |
| Dofetilide | 214 | $48,803 |
| Metoprolol Succinate | 471 | $9,100 |
| Flecainide Acetate | 140 | $7,609 |
| Diltiazem 24hr Er (Cd)Diltiazem Hcl | 123 | $3,006 |
| Propafenone Hcl ErPropafenone Hcl | 11 | $2,096 |
| Amiodarone Hcl | 72 | $1,974 |
| Atenolol | 122 | $1,088 |
| Spironolactone | 71 | $795 |
| Furosemide | 134 | $699 |
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 |
|---|---|---|
| Sanofi-aventis U.S. LLCMultaq | $37,815 | $693,414520 claims |
| Boehringer IngelheimJardiance | $14 | $125,594159 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 55th percentile of 58 clinical cardiac electrophysiology providers in South Carolina.
Other clinical cardiac electrophysiology in Charleston
- Jeffrey WinterfieldCharleston$498K
- Frank CuocoCharleston$306K
- Anne KromanCharleston$279K
- Michael GoldCharleston$204K
- Rachel KaplanCharleston$93K
- Joshua PayneCharleston$81K
- Swati RaoCharleston$61K
- Nicole CainCharleston$6K
- Lanier JacksonCharleston$4K
- Rory DowdCharleston$98
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.