On Call with Dr. Karl is the go-to destination for the latest health and medical news that matter to Torontonians, with top medical experts weighing in. Each week viewers from across the GTA are invited to call in with questions and concerns pertaining to everything from everyday health concerns affecting families to major breaking health news.

He attended medical school at McGill University and holds a Master's degree in Public Health from Harvard University. His work has been published in medical journals including “Canadian Family Physician” and “Emerging Infectious Diseases.”