Prof. Dr. Md. Abul Ahsan (Didar) has been serving as a Senior Consultant since January 1, 2020, to the present. They previously held the position of Professor of Medical Oncology at Shaheed Suhrawardy Medical College, and also served as an Associate Professor and Assistant Professor of Medical Oncology at the National Institute of Cancer Research and Hospital (NICR&H). Earlier in their career, he worked as a Registrar in Radiation Oncology at NICR&H and served as an Officer on Special Duty (OSD) at Bangabandhu Sheikh Mujib Medical University (BSMMU).