St. Mary’s Regional Medical Center has two gastroenterologists, board certified anesthesiologists and registered nurses providing services for patients of the St. Mary’s Provider Network, Community Clinical Services and others who routinely refer to St. Mary’s for diagnostics and medical treatment.
To maximize patient's comfort, shorten recovery and discharge times, all sedation is administered by our Anesthesia Service.
Please watch this important video to help you prepare for your Colonoscopy.
Meet Our GI Physicians
John Lewandowski, MD
Michael Sivulich, MD
Colonoscopy (screenings and follow-ups)
Other standard GI procedures
Telephone consultations for providers to discuss any outpatient management issues/questions
Our gastroenterologists do not hold office hours for routine patient visits. Chronic patients (for example, those with Irritable Bowel Syndrome, Crohns, etc.) must be managed by their primary care provider, or should be referred to another GI practice.
Hours:Monday - Friday 7:30 am to 4:30 pm