Dr. Komen is a clinical Radiation Oncologist. He is a fellow of the College of Medicine South Africa and holds a Master of Medicine in Radiation Oncology from the University of the Witwatersrand, Johannesburg, South Africa.

He is a consultant at Kenyatta National Hospital and a part-time faculty member at Aga Khan University Hospital.

Dr. Komen is an active member of various multi-disciplinary tumour boards and the Kenya Society of Haematology and Oncology (KESHO).