Allen received his medical degree from UNSW in 2004 and obtained his FRANZCR while training in the South East Sydney Health District, mainly at St George Hospital before a Fellowship year at Prince of Wales Hospital in 2015 with a focus on neurological and body MRI. He has spent a short time in public hospital and private radiology practices in south east Sydney and Wollongong prior to joining Alpenglow mainly to service its Hunter New England sector. His subspecialty interests include neuroradiology and body imaging, as well as image-guided spinal and musculoskeletal intervention.