Physician profile
Ciaran O'Brien
NPI 1548624877
$5,176.75
in general payments reported to CMS, 2019-2025
9 companies · $823 in 2025
The $823 reported for 2025 was less than what a typical Vascular Surgery provider received nationally (typical 2025 total: $927).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2023: $1,526 · 2024: $2,828 · 2025: $823.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $2,983 · Education: $2,194.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $2,982.90 |
| Education | $2,193.85 |
Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.
Who reported paying
General payments only, as reported to CMS. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| W. L. Gore & Associates, INC. | $2,516.16 | 2023-2025 | Excluder Conformable Aaa Endoprosthesis With Active Control, Gore Tag Conformable Thoracic Endoprosthesis, Gore Excluder Aaa Endoprosthesis |
| Medtronic, INC. | $1,286.62 | 2023-2025 | Endurant Iis, Valiant Captivia, Heli-Fx Endoanchor System |
| Endologix LLC | $643.72 | 2023-2025 | Alto Abdominal Stent Graft System, Torus Stent Graft System, Endocross Device |
| Cook Medical LLC | $393.81 | 2024-2025 | Cook, Zenith Alpha, Icast Covered Stent System, 6mmx22mmx120cm |
| Boston Scientific Corporation | $157.64 | 2025 | Enroute Transcarotid Neuroprotection System |
| Silk Road Medical, INC. | $75.38 | 2024 | Enroute Transcarotid Neuroprotection System, Enroute Transcarotid Stent, Enroute Enflate Transcarotid Rx Balloon Dilatation Catheter |
| Penumbra, INC. | $49.34 | 2023 | Indigo System |
| Shockwave Medical, INC | $30.09 | 2024 | Shockwave Ivl System With The Shockwave C2 Coronary Ivl Catheter |
| Lemaitre Vascular, INC. | $23.99 | 2023 | Artegraft Vascular Graft |
Drugs and devices associated with these payments
CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Ciaran O'Brien listed in the CMS Open Payments database. Can you tell me about your work with those companies?"
- "Is there a generic or alternative to this medication, and would it work as well for me?"
- "What made you choose this particular treatment for my situation?"
These are normal questions. A good clinician will welcome them.
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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.