Dr. Chismark is a colon and rectal surgeon who provides comprehensive care for all disorders of the colon, rectum and anus. He is a skilled practitioner of both traditional and minimally invasive procedures, including laparoscopy, robotics and transanal endoscopic microsurgery, for the treatment of benign and malignant conditions of the colon and rectum. He evaluates and treats the full spectrum of anorectal disorders including rectal bleeding, hemorrhoids, perianal infections, anal fissure, fecal incontinence and constipation.