A benefit of our electronic medical record is that soon it will be expanding to include a PATIENT PORTAL. read more. The Chattanooga Heart Institute | 2501 Citico Avenue | Chattanooga, TN 37404 | 423-697-2000 ...For Patients‧Physician Directory‧Locations‧About Us‧Andrew H. Fowler, Md, FACC‧James L. Zellner, Md, FACS.