Dr. Joseph Jee Keen Ma is a Ontario state licensed medical doctor, specializing in Ophthalmology. Graduated Magna Cum Laude from University of Toronto Faculty of Medicine, Dr. Ma currently is working at Humber River Hospital, located in 500 Sheppard Ave E North York ON M2N 6H7 Please call +1-416-221-2093 to contact. Access cdoc101.com on a desktop computer to view more details. | |||