Dr. CLARK GARY, Periodontist You are here Home > Periodontists > Dr. CLARK GARY, Periodontist Tweet Our address Address: 649 Scottsdale Drive Suite #3 Guelph, ON N1G 4T7 GPS: 43.51422789999999, -80.23830570000001 Telephone: 519-763-7378 Email: 519-763-8695