Dr.Margaret Ruth Lightheart, Obstetrics and Gynecology You are here Home > Gynecologist > Dr.Margaret Ruth Lightheart, Obstetrics and Gynecology Tweet Our address Address: Unit 2 - 1216 Upper Wentworth Avenue, Hamilton, ON L9A 4W2 GPS: 43.20995629999999, -79.86778349999997 Telephone: 905.389.5657