Professor Erwin Loh is President of the Royal Australasian College of Medical Administrators (RACMA) and National Director of Medical Services at Calvary Health Care, a not-for-profit health network in Australia, with 14 public and private hospitals and 80 residential aged care and retirement villages. Before that he was Chief Medical Officer at Goulburn Valley Health. Prior to that, he was National Chief Medical Officer and Group General Manager Clinical Governance for St Vincent's Health Australia, the country's largest not-for-profit health service. Before that, he was the Chief Medical Officer of Monash Health, Victoria’s largest health service. And before that he was the Deputy Chief Medical Officer at the Peter MacCallum Cancer Centre. And immediately prior to that, he worked as a full-time lawyer at Sparke Helmore.

He is qualified in both medicine and law, with general and specialist registration as a medical practitioner (medical administration specialty) and is a barrister and solicitor of the Supreme Court of Victoria and High Court of Australia. He also has an MBA, Master of Health Service Management, and PhD.

He is currently a director on the board of the Royal Australasian College of Medical Administrators, Healthshare Victoria and the Presbyterian Ladies' College. He is a member of the Australian Health Ethics Committee of the NHMRC. He has previously been a director on the boards of St Vincent's Institute, Garvan Institute of Medical Research, Aikenhead Centre for Medical Discovery, Hudson Institute of Medical Research, Monash Health Research Precinct Pty Ltd, Australian Medical Association (Victoria) and Law Institute of Victoria. He is a Graduate and Fellow of the Australian Institute of Company Directors.

He is Professor at Monash University, where he leads the Clinical Leadership and Management Unit at the Monash Centre for Health Research and Implementation. He is Honorary Clinical Professor with the title of Professor at the Department of Medical Education, University of Melbourne. He is Honorary Professor at Macquarie University at the Centre for Health Systems and Safety Research.

He teaches and carries out research in health law, health management and clinical leadership. He has been an invited speaker at local and international conferences, published on health law, medical management, and health technology, and is a member of the Association of Professional Futurists, with an interest in medical futurology.

He received the Distinguished Fellow Award from RACMA in 2017 for “commitment to governance, research and publication”.