Nicholas Karis, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) · Baltimore, MDNPI 1518140946
Payments from drug & device makers
What this record shows
This record is dominated by education: $14,727 of the $23,511 with a category attached, or 62.6%. Intuitive Surgical accounts for 96.3% of it on its own, with 7 other manufacturers making up the rest. Among thoracic surgery (cardiothoracic vascular surgery) clinicians in MD 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 62 payments — averaging $379.22 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$23K
- Olympus Corporation Of The Americas$298
- Johnson & Johnson$245
- Boston Scientific$143
- Veran Medical Technologies, Inc.$104
- Cardiovascular Systems Inc.$39
- plus $50 from 2 others
What the payments were for
- Travel & lodging$5,75224%
- Food & beverage$1,5337%
- Education$14,72763%
- Other$1,5006%
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 | 47 | $22,632 |
| Olympus Corporation Of The Americas | 4 | $298 |
| Johnson & Johnson | 5 | $245 |
| Boston Scientific | 1 | $143 |
| Veran Medical Technologies, Inc. | 1 | $104 |
| Cardiovascular Systems Inc. | 1 | $39 |
| Atricure, Inc. | 2 | $37 |
| Cumberland Pharmaceuticals, Inc. | 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.
How this compares
$23,511 in reported general payments places this provider in the 95th percentile of 65 thoracic surgery (cardiothoracic vascular surgery) providers in Maryland.
See all thoracic surgery (cardiothoracic vascular surgery) providers in Maryland →
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 Baltimore
- Leonid BelyayevBaltimore$162K
- Neri CohenBaltimore$36K
- Douglas AndersonBaltimore$23K
- Duke CameronBaltimore$21K
- Stephen BroderickBaltimore$19K
- Siamak DahiBaltimore$17K
- Joseph ForbessBaltimore$13K
- Richard BattafaranoBaltimore$13K
- Howard MasseyBaltimore$12K
- Eric KrauseBaltimore$11K
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.