Dr. LeMar Mark, Oral and Maxillofacial Surgery You are here Home > Oral Surgeons > Dr. LeMar Mark, Oral and Maxillofacial Surgery Tweet Our address Address: 197 St. Clair Street, Chatham, ON N7L 3J4 GPS: 42.4105231, -82.19428900000003 Telephone: 519 354-7773