Best Immunotherapy doctors in Turkey: TOP 6 doctors

Associate Professor Dr. Süleyman Tümen is a general and oncologic surgeon based in Istanbul. He has over 25 years of experience in Türkiye and Iraq. His work focuses on laparoscopic, cytoreductive, and gastrointestinal cancer surgery. He also performs HIPEC for peritoneal surface cancers. His most recent post was at Büyük Anadolu Hospital (BAHINTERNATIONAL). He previously served at Istanbul Oncology Hospital, Medicana Ataşehir, Taksim E&R Hospital, Bursa AOS Oncology Hospital, and Al Arabia Hospital in Iraq.

Accreditations include HIPEC, cytoreductive surgery training at the Milan Cancer Institute (2008), bariatric surgery, endoscopy, and breast/oncoplastic surgery. He graduated from Istanbul University Cerrahpaşa Faculty of Medicine. He completed his general surgery residency at Dokuz Eylül University. His expertise includes advanced laparoscopy, colorectal and upper GI surgery, Whipple procedure, total esophagectomy, hepatectomy, sleeve gastrectomy, thyroidectomy, and advanced endoscopy.

Dr. Muhammed Mustafa Atci is an Associate Professor of Medical Oncology at İstinye University, Liv Hospital Topkapı (2025–present). He previously served as Associate Professor and Education Coordinator at Prof. Dr. Cemil Taşcıoğlu City Hospital (2023–2025). He was also a Medical Oncologist there (2018–2021).

He has been a member of ASCO and the Turkish Society of Medical Oncology since 2018. He is the author or co-author of 19 peer-reviewed international papers on colon, breast, gastric, pancreatic, lung, thyroid, sarcoma, and colorectal cancers.

Notable works include a multicentre study on stage IIB colon cancer survival (Journal of Chemotherapy). He also studied the De Ritis ratio for lung metastasis in testicular cancer (Current Urology). His prognostic studies used PET/CT, MSI, lymph node ratio, and metabolic tumor volume.

Dr. Irfan Cicin is a Professor of Medical Oncology at the Trakya University Faculty of Medicine (2015–present). He has over 20 years of medical oncology experience and has held academic roles since 2010.

Education: MD, Istanbul University – Cerrahpaşa (1991–1997). Residency in Internal Medicine, Trakya University (1997–2002). Fellowship in Medical Oncology, Trakya University (2002–2004).

Practice: Medical Oncologist, Trakya University (2005–2008). Medical Oncologist, Elazığ Training and Research Hospital (2008–2010). Associate Professor of Medical Oncology, Trakya University (2010–2015). He previously served as a physician in the Turkish Air Force at Etimesgut Military Hospital (2004–2005).

Dr. Rahib Hasanov is a medical oncologist. He graduated from Istanbul University Cerrahpaşa Faculty of Medicine (1999–2005). He completed an internal medicine residency (2009–2013) and a medical oncology fellowship at Marmara University (2015–2018). He also completed an observership at Houston Methodist Hospital (2006–2007).

He focuses on personalized oncology. His treatments include immunotherapy, targeted therapy, and novel agents. His clinical interests include gastrointestinal, breast, lung, and genitourinary cancers.

He attends national and international conferences. He welcomes patients from Turkey, Azerbaijan, Montenegro, Georgia, Uzbekistan, the Middle East, Europe, and the United States.

Assoc. Prof. Atakan Topçu, M.D., is a medical oncologist at Medipol University and Medipol Acıbadem Regional Hospital. He treats solid tumors, including lung, breast, colorectal, gastric, and neuroendocrine cancers. His work also covers targeted therapies, immunotherapy, geriatric oncology, and cancer-related malnutrition, cachexia, and sarcopenia.

He has authored more than 50 peer-reviewed papers. Recent work includes a 2024 Frontiers in Medicine study on geriatric syndromes and a 2023 Future Oncology paper on sarcopenia and anxiety in lung cancer. He has also published on the CONUT score in breast cancer and on malnutrition in HER2-negative metastatic gastric cancer.

Dr. Topçu serves on the Editorial Board of BMC Cancer. He is a member of the Turkish Society of Medical Oncology, ESMO, and the Turkish Geriatrics Society. Education and training: M.D., Uludağ University; residency in Internal Medicine, Marmara University; fellowship in Medical Oncology, Bezmialem Vakıf University.