| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.7 / 5 (492) | Barcelona, Spain | — | 23,000+ treatments | Radiofrequency ablation, Plastic surgery for cardiac valve | — | — | Joint Commission International , European Foundation for Quality Management | |
| #2 | 5.0 / 5 (1) | Bangkok, Thailand | 19+ years | Radiofrequency ablation with 3D mapping, Heart preventive examination (men, women) | — | — | Global Healthcare Accreditation Program, Joint Commission International | ||
| #3 | 5.0 / 5 | Istanbul, Turkey | 41+ years | Tetralogy of Fallot Surgery | — | — | — | ||
| #4 | — / 5 | Wuppertal, Germany | 15+ years | Coronary angiography, Coronary bypass surgery | — | — | International Accreditation System for Interventional Oncology Services (IASIOS), German Cancer Society | ||
| #5 | 3.6 / 5 | Goyang, Republic of Korea | — | — | Heart preventive examination (men, women) | — | — | Advanced Regenerative Medicine Implementation Institution (Ministry of Health and Welfare, Republic of Korea) | |
| #6 | 5.0 / 5 (3) | Madrid, Spain | — | — | Coronary artery bypass grafting | — | — | Joint Commission International , International Organization for Standardization | |
| #7 | 5.0 / 5 (1) | Tekirdag, Turkey | 36+ years | Heart preventive examination (men, women) | — | — | American Accreditation Commission International | ||
| #8 | 4.4 / 5 | Warsaw, Poland | — | — | Heart preventive examination (men, women) | — | — | — | |
| #9 | — / 5 | Vienna, Austria | 34+ years | Heart preventive examination (men, women) | — | — | — | ||
| #10 | 4.5 / 5 (495) | Istanbul, Turkey | — | — | Coronary stenting, Heart Valve Replacement | — | — | Joint Commission International , Patient choice in Pediatric Oncology & Hematology Oncology |