I recieved a check from my insurance company to pay for a procedure that was done by an out-of-network doctor. well i paid that. a few weeks later i recieve another check for the same amount my question is, i believe this is a mistake, what would happen if i cashed it? Its made out directly to me, so it is a valid check.....

They will ravenously come after you for the money, especially if they provided an explanation of benefits prior to issuing or with your check. Be careful!