Dr. Abdullah Şişik

Prof. Dr. Abdullah Şişik is a distinguished general surgeon whose expertise lies in the field of bariatric and metabolic surgery. With more than a decade of experience in Istanbul, he has become a trusted name for patients seeking safe, effective, and lasting weight‑loss solutions. His academic credentials are complemented by his role as a Fellow of the European Board of Surgery and his long‑standing involvement with the Archives of Clinical and Experimental Medicine, where he served as a founding editor and later as editor‑in‑chief. At his clinic in Üsküdar, Prof. Dr. Şişik offers a comprehensive range of procedures, including sleeve gastrectomy, gastric bypass, duodenal switch, and minimally invasive gastric balloon therapy. Each intervention is tailored to the individual’s medical history, lifestyle, and weight‑loss goals, ensuring that patients receive the most appropriate and evidence‑based treatment. His multidisciplinary team—comprising experienced surgeons, internists, dietitians, and patient representatives—provides coordinated care from the initial assessment through postoperative follow‑up. Patient care at Prof. Dr. Şişik’s practice is rooted in a holistic, compassionate approach. Before surgery, patients undergo thorough medical, nutritional, and psychological evaluations to confirm suitability and to design a personalized weight‑loss plan. Post‑operative support includes structured diet programs, regular monitoring, and access to a dedicated care team that remains available 24/7. This integrated model has earned the clinic a reputation for high patient satisfaction and remarkable outcomes. Beyond clinical practice, Prof. Dr. Şişik remains actively engaged in research and education, publishing numerous studies on bariatric surgery outcomes and contributing to international guidelines. His commitment to advancing the field, combined with a patient‑first philosophy, makes him a leading authority for individuals seeking transformative weight‑loss care in Istanbul.