Graduated MBBS from The University of Tamilnadu, Madras. India in 2000. Attained his Fellowship of College of Physicians and Surgeons (FCPS) and Doctorate in Medicine (MD) in Anaesthesiology in India in 2005, Gold Medallist in the Fellowship in Anaesthesiology (FCPS) 2005—winner of B Braun International Scholarship for Scientific and Academic Excellence in Anaesthesiology (2005).
Fellowship of the College of Intensive Care Medicine (FCICM) in 2009 and the European Diploma in Intensive Care Medicine (EDIC) in 2010. Krish joined the full-time staff of the RAH ICU in 2010.
Post Graduate Certificate in Clinical Ultrasound and Grad Cert in Crit Care Echo in 2011. Graduate Diploma in Health Service Management in 2012. Graduate Cert in Higher Education in 2014. Masters in Health Administration (Flinders University) in 2014.
Fellowships from the Royal Australasian College of Medical Administrators (FRACMA) in 2019 and the Australasian College of Health Service Management (FACHSM) in 2019.
Master of Public Health (University of Adelaide) in 2020 (Thesis topic: Preparedness and response to COVID-19 in a quaternary referral center and the interface with public health), Master of Philosophy (University of Adelaide) (Thesis topic: Diurnal variation in the performance of rapid response systems) in 2020.
Appointed as Head of Unit in 2020.
He is currently the Director of ICU, Royal Adelaide Hospital, Central Adelaide Local Health Network (CALHN).