Patient Portal (813) 920-8882. Westchase Gastroenterology. A Division of Gastro Florida. Contact Us 11912 Sheldon Road Tampa, FL 33626. Email: [email protected] Office Hours: Monday-Friday, 8am-4:30pm Tel: (813) 920-8882 Fax: (813) 920-8883. 4695 Van Dyke Road.