Karthikeyan Ananthasubramaniam, MD
Cardiovascular Disease · Detroit, MINPI 1801964333
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $93,370 of the $112,024 with a category attached, or 83.3%. E.r. Squibb & Sons, L.L.C. accounts for 65.9% of it on its own, with 11 other manufacturers making up the rest. Reporting peaked in 2022 at $41,849 and has fallen 75.8% since, to $10,108 in 2025. Among cardiovascular disease clinicians in MI with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 79 payments — averaging $1418.03 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- E.r. Squibb & Sons, L.L.C.$74K
- Lantheus Medical Imaging, Inc.$20K
- Alnylam Pharmaceuticals Inc.$7K
- ZOLL Services LLC (a/k/a ZOLL Lifecor Corp)$6K
- AstraZeneca$3K
- Bristol Myers Squibb$600
- plus $1K from 6 others
Across 40 payments — averaging $6234.26 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.
- E.r. Squibb & Sons, L.L.C.$146K
- Lantheus Medical Imaging, Inc.$65K
- Alnylam Pharmaceuticals Inc.$27K
- Astellas Pharma Global Development$6K
- Ionis Pharmaceuticals, Inc.$6K
What the payments were for
- Consulting fees$7,5757%
- Speaking & faculty fees$93,37083%
- Travel & lodging$7,4997%
- Food & beverage$3,3873%
- Education$1940%
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 |
|---|---|---|
| E.r. Squibb & Sons, L.L.C. | 41 | $73,846 |
| Lantheus Medical Imaging, Inc. | 4 | $19,813 |
| Alnylam Pharmaceuticals Inc. | 5 | $7,382 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 3 | $6,000 |
| AstraZeneca | 4 | $2,939 |
| Bristol Myers Squibb | 2 | $600 |
| Pfizer | 5 | $540 |
| Novo Nordisk | 9 | $495 |
| GE HealthCare | 2 | $224 |
| Bridgebio Pharma, Inc. | 2 | $150 |
| Novartis | 1 | $20 |
| Recor Medical Inc | 1 | $16 |
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.
How this compares
$112,024 in reported general payments places this provider in the 95th percentile of 760 cardiovascular disease providers in Michigan.
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 |
|---|---|---|
| VyndamaxTafamidis | 140 | $3,365,622 |
| VyndaqelTafamidis Meglumine | 85 | $1,802,014 |
| CamzyosMavacamten | 45 | $376,209 |
| EliquisApixaban | 118 | $142,552 |
| JardianceEmpagliflozin | 54 | $64,108 |
| EntrestoSacubitril/Valsartan | 23 | $37,800 |
| XareltoRivaroxaban | 24 | $35,339 |
| Repatha SyringeEvolocumab | 13 | $9,208 |
| Metoprolol Succinate | 193 | $3,114 |
| Atorvastatin Calcium | 244 | $3,016 |
| Ezetimibe | 74 | $2,172 |
| Ranolazine ErRanolazine | 17 | $2,106 |
| Omega-3 Acid Ethyl Esters | 19 | $1,691 |
| Carvedilol | 73 | $1,253 |
| Losartan Potassium | 109 | $1,154 |
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 |
|---|---|---|
| PfizerVyndamax, Vyndaqel, Eliquis | $540 | $5,310,188343 claims |
| E.r. Squibb & Sons, L.L.C.Camzyos | $73,846 | $376,20945 claims |
| NovartisEntresto | $20 | $37,80023 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 95th percentile of 760 cardiovascular disease providers in Michigan.
Other cardiovascular disease in Detroit
- Pedro Villablanca SpinettoDetroit$620K
- Wayne WeaverDetroit$340K
- Brian OneillDetroit$250K
- Gerald KoenigDetroit$96K
- David LanfearDetroit$82K
- Celeste WilliamsDetroit$70K
- Mahir ElderDetroit$68K
- Cori RussellDetroit$67K
- Pedro Engel GonzalezDetroit$66K
- James LeeDetroit$58K
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.