St. John Ambulance - Durham Region Share: Health & Safety St. John Ambulance - Durham Region Visit Website Request Info 64 Colborne St. E. Oshawa, ON L1G 1L9 (905) 434-7800 1-800-267-1032 (905) 434-1042 (fax) Hours: Monday to Friday 8:30 a.m. to 4:30 p.m.Training can be offered any time About Map About We train over 7000 clients annually in First Aid,CPR & AED. Our courses set standards for WSIB mandate. We offer courses weekly though out Durham Region & we come to you. Ask about Kits & AED sales. Directions various training sites, contact staff who can assist you.