| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.7 / 5 (496) | 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 | 4.7 / 5 (44) | Barcelona, Spain | — | 14,000+ treatments | Fetal valvuloplasty, atrioseptostomy, postnatal cardiac surgery | Severe heart defects needing fetal surgery | 2,000+ fetal interventions for congenital heart defects, including in-utero valvuloplasty. 250 cardiac surgeries yearly — the highest volume pediatric cardiac unit in Spain. 3D heart modeling for precise surgical planning. | Bookimed Award: Best pediatric hospital, World's Best Specialized Hospitals 2022 by Newsweek |