We use Medicare/Humana for our Part B Supplement with Drug Coverage and it is a PPO so We can go to any doctor or hospital we choose around the Country and it has worked great for us and my wife had to go to the Hospital a while ago and the bill was 17K to Humana/Medicare but our bill came to only 169 bucks
In Wash state it costs us 200 bucks each a month out of our SS check but well worth it,Do not know about Tennessee but that's what it costs Up here