Dr. John Stephen McMahon Dr. John Stephen McMahon Suite 306 377 Church Street Markham ON L6B 1A1 Phone: (905) 472-5375 Fax: (905) 472-5651 Markham Surgeons Ontario Surgeons Surgical Wait Times Joint Replacements National Directory Surgeon Directory Non-Surgical Treatment Patient Education Videos Joint Replacements Surgical Wait Times TeleOrthopaedics.com Online Physiotherapy Home Care Physio Spinal Conditions Shoulder Injuries Elbow Injuries Hand & Wrist Injuries Hip Injuries Knee Injuries Foot & Ankle Injuries Pediatric Conditions Joint Replacements Sports Injuries Pain Management Cartilage Repair General Conditions