Dr. Nadir is a distinguished surgeon with over 20 years of experience in general, endocrine, and gastrointestinal surgery. After graduating from Hacettepe University Faculty of Medicine in 2003, he completed his specialization in general surgery at the Şişli Etfal Training and Research Hospital, one of Turkey’s most respected surgical institutions. Throughout his career, he has performed thousands of operations involving complex laparoscopic procedures and oncologic surgeries. His expertise includes gastric and colorectal cancer surgery, laparoscopic sleeve gastrectomy, gastric bypass, hernia repair, thyroid and adrenal surgery, and minimally invasive gastrointestinal treatments. In addition, he treats a wide range of conditions such as obesity, thyroid diseases, colon and rectum tumors, and gallbladder disorders. Dr. Nadir is also deeply involved in academic research and has published extensively in both national and international medical journals. He is a member of several professional surgical societies and is known for his evidence-based, patient-centered approach to modern surgical care.