Dr Green completed his medical degree at Bristol University in the UK. Following various hospital jobs in medicine, surgery and intensive care as a junior doctor he worked in the Philippines as a SCUBA dive medic & GP for an NGO. He then undertook postgraduate specialist training in radiology with subspecialty interests in head & neck and nuclear medicine including PET-CT.
He has travelled extensively to all seven continents and worked abroad as a doctor and as a biologist prior to changing career to medicine, which included two and a half years living on a remote research station in the Antarctic.
He joined the Chinese University of Hong Kong in 2021 and is involved in medical undergraduate teaching, as well as clinical radiology focussing on head and neck.