★★★★★5.0(1)Dr. Mark Aaron, MDAdvanced Heart Failure and Transplant Cardiologist, CardiologistLebanon, TNAccepting patientsAffiliated with a Castle Connolly Top HospitalAccepting patientsAffiliated with a Castle Connolly Top HospitalRatings & ReviewsMost RecentHighest Rated11/08/2010Top Notch Heart Doctorshe hreally spent a lot of time with me. I felt like he cared about getting the right answer to my problems. 1