Karen Rieger, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Indianapolis, INNPI 1598870982
Payments from drug & device makers
What this record shows
This record is dominated by education: $23,632 of the $27,650 with a category attached, or 85.5%. Intuitive Surgical accounts for 94.7% of it on its own, with 8 other manufacturers making up the rest. Reporting peaked in 2022 at $24,346 and has fallen 99.6% since, to $107 in 2025. Among thoracic surgery (cardiothoracic vascular surgery) clinicians in IN with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 42 payments — averaging $658.33 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$26K
- Baxter Healthcare$324
- Medtronic$273
- Davol Inc.$220
- Atricure, Inc.$169
- Covidien LP$148
- plus $324 from 3 others
What the payments were for
- Travel & lodging$2,2608%
- Food & beverage$1,7586%
- Education$23,63285%
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 |
|---|---|---|
| Intuitive Surgical | 27 | $26,192 |
| Baxter Healthcare | 4 | $324 |
| Medtronic | 2 | $273 |
| Davol Inc. | 2 | $220 |
| Atricure, Inc. | 3 | $169 |
| Covidien LP | 1 | $148 |
| Johnson & Johnson | 1 | $113 |
| Zimmer Biomet | 1 | $111 |
| Kls-martin L.p. | 1 | $100 |
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.
- DAVINCI XI$23,500
- Da Vinci Surgical System$2,348
- Signia$273
- Polysorb$148
- PROGEL$138
- ATRICURE CRYOICE CRYOSPHERE CRYOABLATION SYSTEM$134
- Non-Franchise (NOF) - NonProduct$115
- RYBREVANT$113
- STERNALOCK BLU SYSTEM$111
- No Related Product$110
How this compares
$27,650 in reported general payments places this provider in the 90th percentile of 127 thoracic surgery (cardiothoracic vascular surgery) providers in Indiana.
See all thoracic surgery (cardiothoracic vascular surgery) providers in Indiana →
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.
Other thoracic surgery (cardiothoracic vascular surgery) in Indianapolis
- Marc GerdischIndianapolis$1.4M
- Andrew BarksdaleIndianapolis$158K
- Manesh ParikshakIndianapolis$61K
- Ashish PulikalIndianapolis$36K
- Nakul ValsangkarIndianapolis$33K
- John FehrenbacherIndianapolis$26K
- John BrownIndianapolis$25K
- Vincent NardyIndianapolis$19K
- David HeimansohnIndianapolis$17K
- Rachit GuptaIndianapolis$16K
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.