Dr. Leung graduated from the Faculty of Medicine, The University of Hong Kong in 1979.  He has been working in the field of Geriatric Medicine since 1980.  He has received his MRCP (UK) in 1985, FRCP (Edin) in 1994, FRCP (London) and FRCP (Glasg) in 2000.  He is also a Fellow of the Hong Kong Academy of Medicine and Hong Kong College of Physicians.
    
Dr. Leung is currently Chief of Service of Department of Medicine and Geriatrics of United Christian Hospital, Chairman of Geriatric Specialty Board of Hong Kong College of Physicians, Hon Associate Professor of Department of Medicine, Chinese University of Hong Kong, Hon Associate Professor of Department of Medicine and Department of Social Work and Social Administration of University of Hong Kong, Chairman of Departmental Advisory Committee of Department of Applied Social Studies, City University of Hong Kong, Member of Guardianship Board.  He is also President of the Hong Kong Association of Gerontology and Hong Kong Continence Society.  He has been Chief Editor of the Hong Kong Journal of Gerontology.

Dr. Leung is well experienced in the organization of international conferences. Dr. Leung has been Chairman of Organizing Committee of 5th Asia/Oceania Regional Congress of Gerontology in 1995, Second Scientific Meeting of Asian Society for Female Urology in 2000 and First World Congress of Long Term Care in Chinese Communities in 2002. Dr. Leung has also been a member of the Organizing Committee of the Asia Pacific Regional Conference for the International Year of Older Persons in 1999, the International Conference on Prevention of Suicide in Elderly in 2004 and the Second World Congress of Long Term Care in Chinese Communities held in Taiwan in 2004.

Dr. Leung is a council member of the International Association of Gerontology and the Asia/Oceania Region of IAG.  He also serves as co-convenor of the Scientific Subcommittee of Clinical Medicine of the Asia/Oceania Region of IAG.  Dr. Leung has been invited to lecture in a symposium held in Korea, Japan, Singapore, Australia, China, Macau, and Taiwan.

Dr. Leung's major research interests are epidemiology in old age, health promotion, osteoporosis, fall, stroke, incontinence, long term care and public policy in old age.  Dr. Leung published widely in local and international journals and has been a contributor to a number of books on health and aging.

Dr. Leung has served on various boards and bodies in Hong Kong and internationally in the International Association of Gerontology and Asia Pacific Advisory Board on Continence Care.  He is also founding member of Hong Kong Osteoporosis Foundation.

Under the leadership of Dr. Leung, the Hong Kong Association of Gerontology hasdeveloped tremendously locally and internationally in the past 10 years.