| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.5 / 5 (0 reviews) | Madrid, Spain | — | — | Gamma Knife | — | — | Joint Commission International , International Organization for Standardization | |
| #2 | 3.4 / 5 (0 reviews) | Madrid, Spain | — | — | Tumor Marker Blood Test | — | — | Joint Commission International | |
| #3 | 5.0 / 5 (0 reviews) | Madrid, Spain | — | — | Small intestine resection, Resection of gallbladder | — | — | ISO 45001 (Occupational Health and Safety Management), World's Best Smart Hospitals 2023 by Newsweek | |
| #4 | 4.6 / 5 (16 reviews) | Madrid, Spain | 31+ years26,000+ treatments | Brachytherapy for prostate cancer, Radiosurgery of a brain tumor | — | — | European Foundation for Quality Management, TÜV AG Сompany Research & Investing Certificate | ||
| #5 | 2.5 / 5 (0 reviews) | Madrid, Spain | 36+ years | Tumor Marker Blood Test | — | — | European Foundation for Quality Management, Certification according to DIN EN ISO 9001 by TÜV NORD CERT |