Leonid Karkanitsa, MD
Internal Medicine · Stratford, CTNPI 1669435087
Payments from drug & device makers
Across 165 payments — averaging $30.21 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$1K
- Merck$587
- Novartis$586
- Lilly USA, LLC$554
- GSK$331
- AbbVie$251
- plus $1K from 20 others
What the payments were for
- Food & beverage$4,985100%
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 |
|---|---|---|
| AstraZeneca | 38 | $1,402 |
| Merck | 20 | $587 |
| Novartis | 7 | $586 |
| Lilly USA, LLC | 21 | $554 |
| GSK | 7 | $331 |
| AbbVie(2 entities) | 12 | $251 |
| Novo Nordisk | 11 | $224 |
| Amarin Pharma, Inc. | 3 | $158 |
| Otsuka America Pharmaceutical, Inc. | 6 | $119 |
| Bayer | 5 | $118 |
| Medtronic(2 entities) | 2 | $111 |
| Lundbeck LLC | 5 | $100 |
| Johnson & Johnson | 4 | $62 |
| Pfizer | 3 | $54 |
| Eisai Inc. | 3 | $42 |
| Amgen | 3 | $39 |
| Sanofi-aventis U.S. LLC | 2 | $36 |
| Sunovion Pharmaceuticals Inc. | 3 | $34 |
| Boehringer Ingelheim | 2 | $30 |
| E.r. Squibb & Sons, L.L.C. | 2 | $29 |
| Exact Sciences | 1 | $26 |
| Intra-sana Laboratories | 1 | $22 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $20 |
| Preventice Services, LLC | 1 | $19 |
| Nabriva Therapeutics, PLC | 1 | $17 |
| Philips North America LLC | 1 | $13 |
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.
- ENTRESTO$556
- TRELEGY ELLIPTA$248
- FARXIGA$244
- AIRSUPRA$237
- JARDIANCE$125
- FASENRA$125
- Vascepa$124
- MOUNJARO$123
- STEGLATRO$103
- ClosureFast$100
How this compares
$4,985 in reported general payments places this provider in the 90th percentile of 2,067 internal medicine providers in Connecticut.
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 | 263 | $84,477 |
| BiktarvyBictegrav/Emtricit/Tenofov Ala | 17 | $46,879 |
| EntrestoSacubitril/Valsartan | 92 | $35,331 |
| XareltoRivaroxaban | 106 | $29,708 |
| FarxigaDapagliflozin Propanediol | 73 | $20,015 |
| MyrbetriqMirabegron | 64 | $17,085 |
| CreonLipase/Protease/Amylase | 14 | $15,228 |
| Janumet XrSitagliptin Phos/Metformin Hcl | 11 | $12,704 |
| GemtesaVibegron | 30 | $10,930 |
| RexultiBrexpiprazole | 15 | $10,664 |
| RestasisCyclosporine | 15 | $10,286 |
| LinzessLinaclotide | 12 | $8,943 |
| JardianceEmpagliflozin | 18 | $8,939 |
| JanuviaSitagliptin Phosphate | 15 | $8,664 |
| Potassium Chloride | 75 | $8,234 |
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 | $54 | $84,477263 claims |
| AbbVieCreon, Restasis, Linzess, Lumigan | $251 | $37,68753 claims |
| NovartisEntresto | $586 | $35,33192 claims |
| Johnson & JohnsonXarelto | $62 | $29,708106 claims |
| MerckJanumet Xr, Januvia | $587 | $21,36826 claims |
| AstraZenecaFarxiga | $1,402 | $20,01573 claims |
| Boehringer IngelheimJardiance, Synjardy, Tradjenta | $30 | $18,98042 claims |
| Otsuka America Pharmaceutical, Inc.Rexulti | $119 | $10,66415 claims |
| GSKTrelegy Ellipta | $331 | $6,47712 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 90th percentile of 2,067 internal medicine providers in Connecticut.
Other internal medicine in Stratford
- Joseph SouferWaterbury$21.5M
- David RadinStamford$7M
- Steven RyderWestport$3.9M
- Nancy BrownNew Haven$2.8M
- Charles MontanoCromwell$2.8M
- Arthur DecillisMadison$1M
- Michelle MallitzTrumbull$971K
- Allen HellerWoodbridge$758K
- Gary BlickNorwalk$717K
- Margaret ChusteckaHamden$652K
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.