Dr. Sandra de Montbrun is a Royal College–certified colorectal surgeon dedicated to providing comprehensive, compassionate, and expert care for patients with diseases of the colon, rectum, and anus.

Our practice offers advanced diagnosis and treatment for both benign and malignant colorectal conditions, with a focus on individualized care, surgical excellence, and patient comfort.

Whether you require screening colonoscopy, management of inflammatory bowel disease, or specialized cancer care, Dr. de Montbrun and her team are committed to guiding you through every step with professionalism and respect.

What We Offer

  • Surgery

    Surgical procedures take place in the hospital operating room using modern, minimally invasive techniques. Recovery and follow-up are reviewed in detail during the initial consult. The da Vinci robotic surgical system will soon be up and running at One Halton which will further expand minimally invasive surgical options in the community.

  • Colonoscopy

    Colonoscopy and flexible sigmoidoscopy are important tools for screening and diagnosing colorectal conditions, including colon cancer. Your safety and comfort are our top priority. Early detection saves lives — and we’re here to make the process as easy and reassuring as possible.

  • Office Consultation

    Your first visit is an important step in understanding your concerns and creating a care plan. During your appointment, we’ll review your medical history, discuss your symptoms, and perform a focused examination if needed. Our goal is to make sure you feel informed, comfortable, and confident in your care.

  • Out Patient Department (OPD)

    In OPD, we perform minor procedures to address common issues. These include removal of small skin lesions, anal skin tag removal, hemorrhoid banding, anal botox and helping diagnose conditions such as perianal fistulas or rectal prolapse.

Reserve your complimentary

B-Pulse chair trial

The B-Pulse Chair uses Pulsed Electromagnetic Field (PEMF) therapy to gently stimulate and strengthen the pelvic floor muscles—without pain, downtime, or the need to undress. This non-invasive treatment helps improve pelvic floor strength and reduce incontinence, offering a comfortable and effective way to support pelvic health and confidence.

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Meet the Team

Dr. Sandra de Montbrun

Dr. Sandra de Montbrun is a Royal College certified colorectal surgeon at Oakville Trafalgar Memorial Hospital, dedicated to providing expert, compassionate care for patients with colorectal conditions.

After completing her medical degree at the University of Toronto and surgical training at Dalhousie University, Dr. de Montbrun returned to Toronto for specialized fellowship training in colorectal surgery, focusing on colorectal cancer and inflammatory bowel disease. She also holds a Master’s in Education and a PhD, reflecting her passion for surgical education and innovation.

Before joining Oakville Trafalgar, Dr. de Montbrun built a busy colorectal surgery practice at St. Michael’s Hospital in Toronto, where she cared for patients with complex colorectal cancers and IBD and contributed to international advancements in surgical training.

Now based in Oakville, Dr. de Montbrun brings her expertise and warmth to the community—offering comprehensive care for colon and rectal cancer, Crohn’s disease, ulcerative colitis, diverticular disease, and perianal conditions such as hemorrhoids and fissures. Known for her thoughtful approach and commitment to patient well-being, she strives to make every patient feel informed, supported, and confident in their care.

Nataliia Barna

Nataliia is the heart of our practice. As our office administrator, she brings warmth, care, and exceptional organization to everything she does. She ensures the office runs seamlessly while creating a welcoming, supportive environment for every patient. Her kindness and professionalism make her an invaluable part of our surgical family.

Yamilee is the guiding hand of our Colorectal Diagnostic Assessment Program (DAP). As our nurse navigator, she supports patients through every step of their diagnostic journey with compassion, clarity, and care. From coordinating tests and appointments to answering questions and offering reassurance, Yamilee ensures patients feel informed, supported, and never alone. Her dedication helps make a complex process feel seamless and personal.

Yamilee Julien

Location


North Oakville Medical Building

3075 Hospital Gate , Suite 412

Oakville, Ontario, L6M 1M1

Hours
Monday–Friday
8am–4pm

Phone (289) 386-0472

Fax (289) 644-0094