Dr. Hamdullah Sayılan is a Consultant in Internal Medicine at The Pearl International Hospital, Doha. He completed his medical education at Dicle University and his Internal Medicine residency at Recep Tayyip Erdogan University.

Dr. Sayılan has held specialist positions at several hospitals in Turkey, including Baskent University and Izmir Tire Government Hospital. He is a member of the Turkish Medical Association and the Turkish Internal Medicine Specialist Association. Dr. Sayılan has participated in numerous national and international congresses focused on internal medicine, kidney diseases, hypertension, and transplantation.