Dr. Sébastien Lachance, a board-certified colorectal surgeon, is renowned for his expertise and, more importantly, his unwavering dedication to patient care.

Dr Lachance earned his medical degree at Université de Montréal in Montreal, Canada. He then completed his general surgery training at Université de Montréal. He then undertook a fellowship in colorectal surgery at McGill University, focusing on advanced endoscopy and transanal surgical techniques for colorectal cancer and inflammatory bowel disease.

Dr Lachance also completed a fellowship in colorectal oncology at Memorial Sloan-Kettering Cancer Center. Finally, he completed a master’s degree in health economics at the London School of Economics, focusing on the evaluation of new health technologies and the performance of healthcare systems.

Dr. Sébastien Lachance is certified by the Royal College of Surgeons of Canada in colon and rectal surgery and the American Board of Surgery in general surgery.
He holds a specialist certificate in colon and rectal surgery from the Collège des Médecins du Québec in colon and rectal surgery.

Sebastien Lachance is a general and colorectal surgeon practicing at le CISSS de Laval since 2018. He holds the rank of clinical instructor at Université de Montréal. His specialty interests include the surgical and endoscopic treatment of colorectal cancer, inflammatory bowel disease and anorectal disorders.

Dr. Lachance’s commitment extends far beyond surgical excellence, as he invests time in understanding his patients’ concerns, educating them about their condition, and involving them in decision-making. Dr. Lachance’s warm and approachable nature and passion for his field have earned him a trusted reputation in colorectal surgery, providing comfort to patients as they navigate their medical journey.

Career highlights

  • Colorectal Surgeon – Hôpital Cité de la Santé
  • Colon and Rectal Surgery Fellow – McGill University
  • General Surgery Resident- Université de Montréal
  • Master in sciences, Health Economics -The London School of Economics and Political Science (LSE)
  • MSc Health Economics, Policy and Management – The London School of Economics and Political Science (LSE)
  • Doctor of Medicine (MD), Médecine – Université de Montréal

Friendly, personalized service and expert advice

West Island Colorectal Clinic is your trusted destination for expert care and treatment of rectal and colorectal conditions. Our experienced specialists and state-of-the-art facilities ensure customized solutions for your unique needs. Gain access to compassionate, effective treatment in a judgment-free space.

Struggling with colon or rectal issues?

Let the experts at West Island Colorectal Clinic guide you through personalized diagnostics and treatment options tailored to your needs.

We ensure that every patient feels heard, respected, and cared for and aim to make your journey to better colorectal health a collaborative, supportive, and positive experience.