Let me give you a clear answer that might help you to understand why you need call in FM. First of all, insurace companies require nowadays when you sign contracts with them that their patients will have access to you 24/7, even if that means by phone. So to get around this requirment, most physicians are forced to hire an answering service that takes and screens the after hours calls. Now I know you would think that there are not a lot of after hours calls, but there are. People put their trust in their FP more so probably than any other doctor. They want to ask them anything and everything that they may think cannot wait until the next office day. I have shared call in my previous family practice rarely before coming to medical school (I am a PA). It is truly a miserable experience. We had a total of 6 providers, 3 docs and 3 PA's. The PA's would occassionally take a call day for the doc to be kind and give them a break. This is perfectly legal as well. I can recall sitting on the tee on the golf course and having my cell phone repeatedly ringing from the service. People mostly call with illness that can't wait until tomorrow, or they don't think is quite serious enough to go to the ER. Then they call for refills that they just realized they are out of. You would be amazed the things you get called for. I think in my future practice I have decided to produce a small paperback brochure/book that stipulates all the major office policies. If you train your patients wll in the beginning, you can avoid the nightmare of the after hour call. Otherwise, you will be abused and NEVER get a full night sleep when you are on call. Also, in our practice, whatever doc was the on call doc was the one who saw all hospital patients in the evening and on weekends. So, it is a significant burden that you cannot avoid. Your best bet is to find another FP or IM doc in the area to share call with you. That works very well.