Provider Directory / S / Matthew Seto D.O. Matthew Seto, D.O. Gastroenterology Specialties: Gastroenterology Phone Number: 303-604-5000 Fax: 720-890-0364 Address: Gastroenterology of the Rockies 13952 Denver West Pkwy, Bldg. 53, Suite 100, Lakewood, CO 80401 Get Directions