Dr. Andrew George Marshall Dr. Andrew George Marshall 1125 Colonel By Drive Ottawa ON K1S 5B6 Phone: (613) 520-2600 Ext. 6583 Fax: (613) 520-3974 Ottawa Surgeons Ontario Surgeons Joint Replacements Surgical Wait Times Back Pain Clinics National Surgeon Directory Canadian Surgeons Abroad Non-Surgical Treatment Private Surgery Surgical Wait Times Joint Replacements Back Pain Clinics