Dr. Welk obtained his Bachelors of Science degree and Medical Degree at the University of Western Ontario. He then went on to complete his urology residency at the University of British Columbia and obtained his Royal College certification in Urology. He completed additional clinical training at the University of Toronto, where he specialized in the evaluation and treatment of male and female incontinence, male urethral stricture disease, and neurogenic bladder dysfunction. During his 2-year fellowship he also completed a masters degree in Clinical Epidemiology at the University of Toronto. 

In 2011 he was appointed as an Assistant Professor in the Department’s of Surgery (Urology) and Epidemiology and Biostatistics at Western University. He is an Adjunct Scientist at the Institute for Clinical Evaluative Sciences. He has received peer-reviewed grants from the Canadian Urologic Association, Academic Medical Organization of Southwestern Ontario, PSI Foundation, Rick Hansen Foundation and Ontario Neurotrauma Foundation.