| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 5.0 / 5 (1) | Madrid, Spain | — | — | Pediatric Cardiac Surgery | — | — | Joint Commission International , International Organization for Standardization | |
| #2 | 3.8 / 5 (6) | Madrid, Spain | — | — | Heart valve surgery, coronary artery bypass grafting, valve-sparing aortic root replacement | Complex pediatric heart conditions | Performs beating-heart coronary artery bypass surgery in 80% of cases. Leads in valve-sparing aortic root replacements in Spain. Uses da Vinci Surgical System for minimally invasive procedures. | World's Best Hospitals 2021 by Newsweek | |
| #3 | 2.5 / 5 | Madrid, Spain | — | — | Pediatric Cardiac Surgery | — | — | European Foundation for Quality Management, Certification according to DIN EN ISO 9001 by TÜV NORD CERT | |
| #4 | 2.8 / 5 | Madrid, Spain | — | — | Pediatric Cardiac Surgery | — | — | European Foundation for Quality Management, Certification according to DIN EN ISO 9001 by TÜV NORD CERT | |
| #5 | — / 5 | Madrid, Spain | 44+ years | Coronary angiography, plastic surgery for cardiac valve, atrial septal defect surgery, coronary angioplasty, heart cryoablation, interventricular septal defect surgery, open heart surgery | Complex pediatric cardiac surgeries | Performs thousands of complex surgeries. Lead surgeon trained at top international institutions like Cleveland Clinic and Mayo Clinic. Member of the Spanish Society of Cardiology. | International Organization for Standardization, European Foundation for Quality Management |