| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.7 / 5 (440 reviews) | Barcelona, Spain | — | 23,000+ treatments | Plastic surgery for cardiac valve, Atrial septal defect surgery | — | — | Joint Commission International , European Foundation for Quality Management | |
| #2 | 4.7 / 5 (154 reviews) | Vienna, Austria | — | — | Electrophysiology Heart Study (EPS) | — | — | International Organization for Standardization, World's Best Hospitals 2021 by Newsweek | |
| #3 | 4.7 / 5 (132 reviews) | Istanbul, Turkey | — | — | Plastic surgery for cardiac valve, Coronary angiography | — | — | International Organization for Standardization, Joint Commission International | |
| #4 | 4.7 / 5 (7 reviews) | Hamburg, Germany | — | — | Electrophysiology Heart Study (EPS) | — | — | International Organization for Standardization, CERTKOM certificate for qualified pain therapy | |
| #5 | 4.5 / 5 (235 reviews) | Istanbul, Turkey | — | 13,000+ treatments | Heart cryoablation | — | — | Joint Commission International , Certification according to DIN EN ISO 9001 by TÜV NORD CERT | |
| #6 | 4.6 / 5 (127 reviews) | Bangkok, Thailand | — | — | Electrophysiology Heart Study (EPS) | — | — | International Organization for Standardization, Joint Commission International | |
| #7 | 4.4 / 5 (32 reviews) | Istanbul, Turkey | — | — | Electrophysiology Heart Study (EPS) | — | — | The Baby-friendly Hospital Initiative (BFHI) by WHO and UNICEF, Turkish Medical Association | |
| #8 | 4.2 / 5 (7 reviews) | Thessaloniki, Greece | — | — | Electrophysiology Heart Study (EPS) | — | — | TEMOS International Healthcare Accreditation, Global Healthcare Accreditation Program | |
| #9 | 4.0 / 5 (3 reviews) | Seoul, Republic of Korea | — | — | Electrophysiology Heart Study (EPS) | — | — | Joint Commission International , Korean Institute for Healthcare Accreditation | |
| #10 | 4.6 / 5 (32 reviews) | Delhi, India | — | — | Interventricular septal defect surgery, Atrial septal defect surgery | — | — | Joint Commission International , Indian National Accreditation Board for Testing and Calibration Laboratories |