Associate Professor Arun Aggarwal has been a Visiting Medical Officer at Hunters Hill Private Hospital since 2007. He has been on the Medical Advisory Committee since 2008 and was the Chairman of the Committee from 2010 to 2013.

He is also currently working as a Visiting Neurologist at Concord Hospital, a Chronic Pain Specialist at the RPAH Pain Clinic and a Rehabilitation Specialist at Balmain Hospital. He is a member of the Royal Australasian College of Physicians, Australasian Faculty of Rehabilitation Medicine and the Australasian Faculty of Pain Medicine.

He received his PhD in 2004 from the University of Sydney. His research has included Electrophysiological Studies in Familial Amyotrophic Lateral Sclerosis with his primary paper, "Detection of pre-clinical motor neurone loss in SOD1 mutation carriers using motor unit number estimation" being widely cited in the international literature. He has written 3 book chapters on this subject and has also published widely on a number of different topics. He currently has a number of research projects in the areas of Chronic Pain and Parkinson's Disease.

He was awarded the Australian Association of Neurologistics Young Investigator Award for his presentation of this paper in 1999 and was nominated for the Delsys Prize for outstanding research in 2012.

He is on the Editorial board of the Journal of Clinical Trials. He is the current Chairman of Australian & New Zealand Association of Neurologists Neuro-Rehabilitation Sub-Committee and on the Medical Advisory Board of Trigeminal Neuralgia Association (Australia).