| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (534 reviews) | Istanbul, Turkey | — | — | Chemotherapy for liver cancer, Radioiodine therapy | — | — | Planetree's Gold Certificate, International Accreditation System for Interventional Oncology Services (IASIOS) | |
| #2 | 5.0 / 5 (0 reviews) | Punta Cana, Dominican Republic | — | — | Online Consultation with Radiation Oncologist | — | — | — | |
| #3 | 4.6 / 5 (0 reviews) | Vienna, Austria | — | — | Radiotherapy for cervical cancer, Radiation therapy for colorectal cancer | — | — | World's Best Hospitals 2026 by Newsweek | |
| #4 | 4.6 / 5 (0 reviews) | Madrid, Spain | — | — | Online Consultation with Radiation Oncologist | — | — | Joint Commission International , European Society for Medical Oncology | |
| #5 | 4.5 / 5 (495 reviews) | Istanbul, Turkey | — | — | Bone marrow transplantation, The Wertheim-Meigs operation | — | — | Joint Commission International , Patient choice in Pediatric Oncology & Hematology Oncology | |
| #6 | 5.0 / 5 (55 reviews) | Istanbul, Turkey | — | — | Mastectomy, Robotic da Vinci prostatectomy | — | — | Joint Commission International , International Organization for Standardization | |
| #7 | 4.5 / 5 (57 reviews) | Frankfurt am Main, Germany | — | — | Radiotherapy for throat cancer, Immunotherapy for breast cancer | — | — | TÜV AG Сompany Research & Investing Certificate, TOP German hospital according to 2019 Focus ranking | |
| #8 | 4.5 / 5 (239 reviews) | Istanbul, Turkey | — | 13,000+ treatments | Mastectomy, Immunotherapy | — | — | Joint Commission International , Certification according to DIN EN ISO 9001 by TÜV NORD CERT | |
| #9 | 4.1 / 5 (42 reviews) | Istanbul, Turkey | 10+ years | Lobectomy, Allogenic bone marrow transplantation from an unrelated donor | — | — | The Baby-friendly Hospital Initiative (BFHI) by WHO and UNICEF, Turkish Medical Association | ||
| #10 | 4.4 / 5 (49 reviews) | Istanbul, Turkey | — | — | CyberKnife for prostate cancer, CyberKnife | — | — | — |