| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (175) | Vienna, Austria | 44+ years | Minimally invasive and robotic surgery, radiotherapy, chemotherapy, immunotherapy, heated intraperitoneal chemotherapy (HIPEC), targeted therapy | Second-opinion cases and abdominal tumors needing HIPEC | Dedicated gastrointestinal cancer center coordinates surgery, chemo, and radiation under one roof. Every case is reviewed by an interdisciplinary tumor board, and on-site liquid biopsy enables early detection. | World's Best Hospitals 2021 by Newsweek, International Organization for Standardization | ||
| #2 | 4.6 / 5 | Vienna, Austria | — | — | Radiation therapy for bowel cancer, Radiation therapy for colorectal cancer | — | Elekta Versa HD accelerator enables IMRT, VMAT, IGRT, and radiosurgery for precise tumor targeting. Tumour boards tailor each radiation plan. | World's Best Hospitals 2026 by Newsweek | |
| #3 | 4.2 / 5 (21) | Vienna, Austria | 26+ years | Robotic surgery, abdominal surgery | — | — | International Organization for Standardization | ||
| #4 | 3.9 / 5 | Vienna, Austria | — | — | Chemotherapy, immunotherapy, targeted therapy, radiotherapy, conventional and minimally invasive surgery, interdisciplinary tumor board | Rapid biopsy and pathology results | Interdisciplinary tumor boards design personalized therapy. On-site histology delivers biopsy results in 2–3 days. Tumors removed via open or minimally invasive surgery. | ISO 9001:2015 Quality management systems, International Organization for Standardization |