Our hospital employs 12 physicians that our department bills for. One of these physicians has refused to submit his IP and OP hospital visits for billing since January. We have only a list of patients at this point from HIM. It's being hinted at that the CEO wants us to bill his visits without his charge sheets. This concerns me, should it? I'm afraid that if he finds out that they've been billed he can challege the E/M levels, etc. He clearly has some issues and seems to be looking for trouble. Any suggestions from a compliance point of view?