About Us

Founded in 2007, The Endoscopy Center at Gateway is an outpatient surgical center specifically designed to provide endoscopic procedures in a comfortable and professional environment. This facility provides patients expanded services and convenient scheduling.

Led by Medical Director Thomas J. Castellano, MD and Center Manager Mariellen McGough, RN, this facility is accredited by the Accreditation Association for Ambulatory Health Care and Medicare certified. The Endoscopy Center at Gateway has been recognized by Becker’s ASC Review as 1 of the 36 GI & Endoscopy-Driven Surgery Centers to know.

We believe in providing the highest standard of medical and surgical care, along with compassion and understanding. The staff at the Endoscopy Center at Gateway, with over 50 years of combined gastroenterology experience, is committed to your good health. Our primary concern is your health and safety.