FCNB Insurance Services Inc. Share: Insurance FCNB Insurance Services Inc. Visit Website 1302 Shull Street Ava, MO 65608 (417) 683-2139 (417) 683-9999 (fax) Facebook Hours: Monday - Friday (8:30am-5:00pm) About Map About Insurance for all needs; personal, commercial, life, and health. Directions Across from the courthouse, just off the square.