10150 S Petunia Way, Suite B. Sandy, UT 84092. OFFICE HOURS: Monday - Friday 7 a.m. - 5 p.m. PHONE: 801-619-1115. At Granite Peaks Endoscopy Center in Sandy, Utah, we offer patients a convenient, cost and time saving option of specialized gastroenterology care in an outpatient setting, including colonoscopy screenings and both upper and lower ....