Dr. Voloyiannis has pioneered and teaches nationwide the Single Incision Laparoscopic Colon and Rectal Surgery, which is the most advanced laparoscopic technique for both malignant and benign conditions of the colon and rectum and he has performed hundreds of procedures to date. Our clinic offers comprehensive diagnosis and treatment for all conditions and diseases of the colon, rectum and anus, ranging from the most simple to the most complex cases. Our clinic operates in a private practice setting and all surgeries are performed exclusively by Dr. Voloyiannis. Our outcomes range among the best in the nation with the lowest readmission and re-operation rates. The Memorial Hermann Hospital Southeast ranges at the top 1% of the hospitals nationwide for surgical outcomes in our specialty. Dr. Voloyiannis performance ranges at the top 95-99th percentile by Press Ganey for patient satisfaction yearly, with exemplary rates set above 85th percentile.