| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.7 / 5 (138 reviews) | Vilnius, Lithuania | — | — | Aortic aneurysm surgery, Radiofrequency ablation with 3D mapping | — | — | Joint Commission International | |
| #2 | 4.6 / 5 (126 reviews) | Antalya , Turkey | — | — | Installing heart pacemaker, Coronary angioplasty | — | — | Joint Commission International | |
| #3 | 4.6 / 5 (514 reviews) | Istanbul, Turkey | — | — | Coronary artery bypass grafting, Radiofrequency ablation | — | — | Planetree's Gold Certificate, International Accreditation System for Interventional Oncology Services (IASIOS) | |
| #4 | 4.3 / 5 (16 reviews) | Hamburg, Germany | — | — | Radiofrequency ablation, Coronary stenting | — | — | International Organization for Standardization, Medical Travel Quality Alliance | |
| #5 | 4.6 / 5 (130 reviews) | Hamburg, Germany | — | — | Coronary stenting, Heart Valve Replacement | — | — | International Organization for Standardization, Medical Travel Quality Alliance | |
| #6 | 4.7 / 5 (7 reviews) | Hamburg, Germany | — | — | Coronary stenting | — | — | International Organization for Standardization, CERTKOM certificate for qualified pain therapy | |
| #7 | 4.0 / 5 (1 review) | Hamburg, Germany | — | — | Heart ultrasound | — | — | World's Best Hospitals 2021 by Newsweek | |
| #8 | 4.7 / 5 (441 reviews) | Barcelona, Spain | — | 23,000+ treatments | Coronary artery bypass grafting, Heart Valve Replacement | — | — | Joint Commission International , European Foundation for Quality Management | |
| #9 | 4.6 / 5 (473 reviews) | Istanbul, Turkey | — | — | Coronary artery bypass grafting, Interventricular septal defect surgery | — | — | Joint Commission International , Patient choice in Pediatric Oncology & Hematology Oncology | |
| #10 | 4.7 / 5 (154 reviews) | Vienna, Austria | — | — | Heart ultrasound | — | — | International Organization for Standardization, World's Best Hospitals 2021 by Newsweek |