Think hanging on to insurance overpayments is no big deal?  Think again.  According to a press release by the U.S. Attorney for the Eastern District of Tennessee, one cardiology practice that neglected to refund overpayments to federal and private insurers and patients has learned a valuable … and expensive lesson: if you have money you’re not entitled to, give it back!  East Tennessee Heart Consultants has reportedly entered into a settlement with the US Attorney for $2.9 Million in connection with the alleged failure to refund overpayments.  For tips on investigating and refunding overpayments, click here.