Contact Us CHI Memorial Center for Healthy Aging - Chattanooga CHI Memorial Missionary Ridge Medical Tower 725 Glenwood Drive Suite E-786 Chattanooga, TN 37404 (423) 682-8150 Office hours: Monday - Friday: 7:30 a.m. - 4:30 p.m. CHI Memorial Center for Healthy Aging - Chattanooga, Boynton drive 957 Boynton Drive Chattanooga, TN 37402 (423) 682-8150 Office hours: Monday - Thursday, 8 a.m. – 12 p.m. CHI Memorial Center for Healthy Aging - Signal Mountain 437 Alexian Way Signal Mountain, TN 37377 (423) 682-8150 Office hours: Monday - Friday, 8 a.m. - 4:30 p.m.