2961 W Maple Loop Dr., Ste 220. Lehi, UT 84043. OFFICE HOURS: Mon-Thur 8:00am to 5:00pm, Fri 8:00am to 12:00pm. PHONE: 801-619-9000. Visit Our Convenient, Expanded Clinic Location in Lehi for Office Appointments. (ALL ENDOSCOPY PROCEDURES are performed at our Sandy locations) Granite Peaks Gastroenterology is a medical practice focused on ....