Dr. Douglas Mack is a pediatric allergy, asthma, and immunology specialist. Dr. Mack is an assistant clinical professor in the Department of Pediatrics at McMaster University. He sits on the board of directors at the Canadian Society of Allergy and Clinical Immunology and Executive for the Ontario Medical Association (OMA) Section of Allergy. He is a co-author of clinical guidelines on the prevention of allergy, oral immunotherapy, and anaphylaxis. Dr. Mack is co-founder of Halton Pediatric Allergy clinic and Principal Investigator (PI) at Ontario Pediatric Allergy Research Corporation.