Our Doctors

The Ontario Colonoscopy Clinics doctors are fellows of the Royal College of Physicians and Surgeons of Canada, they are also licensed by the College of Physicians and Surgeons of Ontario.

Our doctors are all active members of the Department of Surgery at the Etobicoke campus of the William Osler Health System (WOHS).

Dr. Faiz Daudi

Dr. Ryan Heisler

Dr. Nelson King

Dr. Roberta Minna

A staff that truly cares

The Ontario Colonoscopy Clinic’ staff is dedicated to providing efficient, friendly service in a comfortable environment. All our staff are fully trained and active members of their respective Colleges, and they are certified in both BCLS (Basic Cardiac Life Support) and ACLS (Advanced Cardiac Life Support).


In addition to providing a warm welcome to the clinic’s patients, our receptionists will help you with the administration of your file, the scheduling and preparation for your procedure.


Our nursing team is composed of experienced nurses from the William Osler Health System, who are dedicated to providing outstanding patient care.
Heading the nursing team is James Asprer, RN. Boasting a 20 years career in nursing, he has experience working in the ICU and assisting surgeons during endoscopy procedures.

Scope Technologists

Our equipment is always the latest technology available, to ensure optimal performance, our scope technologists are trained in cleaning and maintaining the colonoscopy equipment to the highest standards.