| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.5 / 5 (52 reviews) | Frankfurt am Main, Germany | — | — | Colonoscopy, PET/CT | — | — | TÜV AG Сompany Research & Investing Certificate, TOP German hospital according to 2019 Focus ranking | |
| #2 | 4.7 / 5 (7 reviews) | Hamburg, Germany | — | — | Tumor Marker Blood Test, Gastroscopy with biopsy | — | — | International Organization for Standardization, CERTKOM certificate for qualified pain therapy | |
| #3 | 5.0 / 5 (5 reviews) | Duisburg, Germany | — | — | Gastroscopy with biopsy, Prostate biopsy | — | — | German Cancer Society, Cooperation for transparency and quality in the health service |