There is always a “Doctor On-Call.” If you call your doctor’s office After Hours and you require medical attention please call 1-866-553-7205 to speak to a nurse. For continuity of care, we prefer that you do not use an After Hours Clinic or a Walk-In Clinic. After Hours Obstetrical Care – If you are an Obstetrical patient of Dr. Duncan please call (905) 338-4111.