It maybe because I have regular Medicare and you have advantage.  I will need to find out  if advantage pays doctors the same as private insurance or if they reimburse the same amount as Medicare.   

This may have been covered before. I noticed, while being treated for an illness, and seeing several specialists, the long delay in getting appointments.  Even with my internist.  The treatment I get when I see them is fine(I think this by law), but ...