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Professor Walker is currently a professor in the Department of Medicine, Otago Medical School University of Otago, Dunedin, Aotearoa – New Zealand and is a consultant Nephrologist and previous Head of Nephrology for the Te Whatu Ora Southern. He is also the Director of ‘the Kidney in Health and Disease research theme” based at the University of Otago.
His research programme has had a strong translational basis from laboratory to bedside which includes mechanisms of chronic kidney injury leading to progressive chronic kidney disease and animal models of hypertension-induced injury to the heart and kidneys. At a clinical level, his research focus includes cardiovascular risk factors associated with chronic kidney disease; the changes in drug handling in the setting of kidney disease as well as participation in many international clinical trials in nephrology, He has over 300 peer-reviewed publications, contributed 13 chapters in Nephrology textbooks and is a regular presenter at international nephrology meetings.
Professor Walker is actively involved in both local and international nephrology societies. He is currently on the International Society of Nephrology (ISN) South-East Asia regional board representing the OCEANIA region, Chair of the ISN Clinical Research Programme committee, and deputy chair of ISN Core Programmes committee. He a member of the Asia Pacific Society of Nephrology Executive Committee (ExCo), previously serving as the Honorary Secretary from 2012 -2022 and currently chair of the Awards subcommittee. He has been actively involved in Continuing Medical Education in the Asia Pacific region and has participated in many CME meetings around the region. focusing on the developing countries in Asia and the Pacific where there is clearly an increasing burden of chronic kidney disease.
Within the Australia & New Zealand Society of Nephrology, he serves on the Research Advisory Committee and the Education and Training Committee and is the co-chair of the recently formed Pacific Working group which is tasked with increasing ANZSN support within the Pacific.