| 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 | 35+ years23,000+ treatments | Atrial septal defect surgery | Congenital heart defects | Offers atrial septal defect surgery with JCI accreditation, high post-operative survival rates, and experienced cardiac surgeons like Dr. Raul Abella. | Joint Commission International , European Foundation for Quality Management | ||
| #2 | 4.8 / 5 (41 reviews) | Barcelona, Spain | — | 14,000+ treatments | — | — | — | Bookimed Award: Best pediatric hospital, World's Best Specialized Hospitals 2022 by Newsweek | |
| #3 | 3.8 / 5 (6 reviews) | Madrid, Spain | 29+ years | Consultation with a heart surgeon | — | — | World's Best Hospitals 2021 by Newsweek | ||
| #4 | 5.0 / 5 (6 reviews) | Pamplona, Spain | — | — | Heart-lung transplantation, dynamic cardiomyoplasty, HeartPort technique | Complex cardiac conditions | Performed Spain's first heart-lung transplant. Uses minimally invasive HeartPort technique for faster recovery. JCI-accredited cardiac surgery department. | Joint Commission International , European Society for Medical Oncology | |
| #5 | 4.6 / 5 (16 reviews) | Madrid, Spain | — | 26,000+ treatments | Extended analysis of blood | — | — | European Foundation for Quality Management, TÜV AG Сompany Research & Investing Certificate |