| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (516 reviews) | Istanbul, Turkey | — | — | Brachytherapy for uterine cancer, Whipple surgery | — | — | Planetree's Gold Certificate, International Accreditation System for Interventional Oncology Services (IASIOS) | |
| #2 | 4.6 / 5 (217 reviews) | Istanbul, Turkey | 20+ years | Hyperthermic Intraperitoneal Chemotherapy (HIPEC), Stomach cancer surgery | — | — | Joint Commission International , Turkish Medical Association (Türk Tabıplerı Bırliği) | ||
| #3 | 4.6 / 5 (130 reviews) | Hamburg, Germany | — | — | Liver resection, Stomach cancer surgery | — | — | International Organization for Standardization, Medical Travel Quality Alliance | |
| #4 | 4.7 / 5 (135 reviews) | Istanbul, Turkey | — | — | CyberKnife for brain tumor, Tongue cancer surgery | — | — | International Organization for Standardization, Joint Commission International | |
| #5 | 4.7 / 5 (7 reviews) | Hamburg, Germany | — | — | Gastroectomy, Chemotherapy | — | — | International Organization for Standardization, CERTKOM certificate for qualified pain therapy | |
| #6 | 4.0 / 5 (1 review) | Hamburg, Germany | — | — | Chemotherapy for stomach cancer, Chemotherapy | — | — | World's Best Hospitals 2021 by Newsweek | |
| #7 | 4.6 / 5 (473 reviews) | Istanbul, Turkey | — | — | Whipple surgery, The Wertheim-Meigs operation | — | — | Joint Commission International , Patient choice in Pediatric Oncology & Hematology Oncology | |
| #8 | 4.7 / 5 (61 reviews) | Solingen, Germany | — | — | Throat cancer operation, Transnasal resection of tumor | — | — | Best doctor for herniated disc treatment, German Cancer Society | |
| #9 | 4.4 / 5 (33 reviews) | Istanbul, Turkey | — | — | Pituitary tumor surgery, Throat cancer operation | — | — | International Organization for Standardization, Joint Commission International | |
| #10 | 4.5 / 5 (52 reviews) | Frankfurt am Main, Germany | — | — | Hyperthermic Intraperitoneal Chemotherapy (HIPEC), Brain tumor removal | — | — | TÜV AG Сompany Research & Investing Certificate, TOP German hospital according to 2019 Focus ranking |