Dr Falah graduated from the College of Medicine, Baghdad University, in 2005. He did his postgraduate training in the UK (West and East Midlands regions). In 2019, he completed a PhD degree from the University of Nottingham studying perfusion MRI use in neurological disorders. 

Dr Falah was appointed as a Consultant Neurologist at Nottingham University Hospitals in 2019. He then moved to London in 2021 after being appointed by King's College Hospital (KCH). He runs clinics at KCH Denmark Hill site and Princess Royal University Hospital in Orpington. 

Dr Falah takes part in the Pan London Haematopoietic Stem Cell Transplantation (HSCT) multidisciplinary meeting. He is a visiting Senior Clinical Lecturer at King's College London. He is involved in teaching medical students and supervising junior doctors.  

Dr Falah is involved in clinical trials in the field of multiple sclerosis. He is a member of the UK MS Trials and Registries Consortium.