| 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 | 26+ years23,000+ treatments | Immunotherapy with Keytruda (Pembolizumab), CAR T-cell therapy, Immunotherapy for prostate cancer, Immunotherapy for lung cancer, Immunotherapy for breast cancer, Immunotherapy for kidney cancer, Sarcoma Immunotherapy | Multiple cancer types with tailored immunotherapy | Offers 10+ immuno-drugs for personalized treatment plans. JCI accredited with 95% patient recommendation rate. 1,100,000+ patients treated. | Joint Commission International , European Foundation for Quality Management | ||
| #2 | 4.8 / 5 (41 reviews) | Barcelona, Spain | 30+ years14,000+ treatments | Online Consultation with Oncologist, Consultation with an oncologist | — | — | Bookimed Award: Best pediatric hospital, World's Best Specialized Hospitals 2022 by Newsweek | ||
| #3 | 4.4 / 5 (6 reviews) | Barcelona, Spain | 18+ years | Consultation with an oncologist, PET/CT | — | — | Joint Commission International | ||
| #4 | 4.6 / 5 (5 reviews) | Barcelona, Spain | 37+ years | Immunotherapy | — | — | European Foundation for Quality Management, Certification according to DIN EN ISO 9001 by TÜV NORD CERT |