Patient Portal. Call: (865) 647-3500. Download Profile » Shade Adigun, Ph.D Cardiovascular Disease. Schedule an Appointment Request An Appointment. Location Information. Tennova Heart - North 7557B Dannaher Drive | Suite 225 Powell, TN 37849 (865) 647-5800 Monday - Friday: 8 a.m. - 4:30 p.m. View Map; Credentials & Education Medical School..