Krishna Kumar was born in Indore, India on January 12, 1931. He did medical studies in India, including general surgery, then studied neurosurgery in Canada, becoming a Fellow of the Royal College of Surgeons of Canada (neurosurgery) in 1961. He was one of two neurosurgeons in Canada who first performed complex neurosurgical procedures for the treatment of Parkinson's disease and chronic pain, and he became an internationally-known expert and speaker in pain management. His neurosurgical procedures were televised on national networks. As a clinical professor at the University of Saskatchewan, Dr. Kumar published scientific papers and encouraged students and residents to enter the field of neurosurgery.
Dr. Kumar was responsible for bringing the first magnetic imaging resonance unit to the Regina Health District and acquired a Stealth Navigational System for computer-directed surgery, the most sophisticated of its kind in Canada. He served as chair of the medical board of the Workers' Compensation Board of Saskatchewan for 20 years. He received a Quality Improvement Award from the Saskatchewan Medical Association and the Saskatchewan College of Physicians & Surgeons, a Community Appreciation Award in 1996, and an Excellence in Teaching Award in 1997. He received the Saskatchewan Order of Merit in 2000.