We have a situation where the administration has bought out the contract of a locum from the company he was working for. They now want to use him as a locum for one of our doctors who is going on leave. We believe he should now be considered an employee and should be credentialed with the ins cos we participate with. We need to find documentation which supports this. Does anyone have any suggestions? The info from the Medicare website says "generally" a locum is paid as a sub-contractor for the 60 days he works but we need something more concrete than this.