Andrey Vavrenyuk, MD
Nephrology · Madison, WINPI 1093211195
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 13 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 9 manufacturers reported payments, led by Mozarc Medical US LLC at 27.9% of the total.
Across 13 payments — averaging $123.60 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Mozarc Medical US LLC$448
- Aurinia Pharma U.S., Inc.$213
- Argon Medical Devices, Inc.$175
- Penumbra, Inc.$157
- Venturemed Group, Inc.$133
- Mallinckrodt Hospital Products Inc.$125
- plus $357 from 3 others
What the payments were for
- Food & beverage$1,607100%
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 |
|---|---|---|
| Mozarc Medical US LLC | 4 | $448 |
| Aurinia Pharma U.S., Inc. | 2 | $213 |
| Argon Medical Devices, Inc. | 1 | $175 |
| Penumbra, Inc. | 1 | $157 |
| Venturemed Group, Inc. | 1 | $133 |
| Mallinckrodt Hospital Products Inc. | 1 | $125 |
| AstraZeneca | 1 | $122 |
| Ardelyx, Inc. | 1 | $121 |
| Calliditas Therapeutics US Inc. | 1 | $114 |
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.
- Chameleon$186
- Clot Management$175
- RUBY Coil$157
- Palindrome$156
- FLEX Vessel Prep System$133
- TERLIVAZ$125
- XPHOZAH 30 MG$121
- LUPKYNIS$121
- TARPEYO$114
How this compares
$1,607 in reported general payments places this provider in the 75th percentile of 173 nephrology providers in Wisconsin.
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 |
|---|---|---|
| JardianceEmpagliflozin | 26 | $28,102 |
| Bumetanide | 22 | $2,724 |
| Sevelamer Carbonate | 18 | $666 |
| Losartan Potassium | 39 | $655 |
| Calcitriol | 25 | $588 |
| Chlorthalidone | 36 | $342 |
| Nifedipine ErNifedipine | 13 | $289 |
| Amlodipine Besylate | 20 | $278 |
| Hydralazine Hcl | 21 | $267 |
| Furosemide | 38 | $225 |
| Lisinopril | 20 | $132 |
| Carvedilol | 16 | $44 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Madison
- Sandesh ParajuliMadison$12K
- Didier MandelbrotMadison$7K
- Sayee Sundar AlagusundaramoorthyMadison$6K
- Gabino Maza RodasMadison$1K
- Nolan InterialMadison$815
- Kevin RegnerMilwaukee$246K
- Rosanna RanieriKenosha$84K
- Micah ChanFitchburg$80K
- Rishi KoraGlendale$57K
- Manohar AhujaMilwaukee$35K
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.