How to run a physicians' office?

I'm working full time as an office manager/secretary for a doctor who is opening his own practice. He has never had his own practice before. I'm trying to help him get organized, and make sure everything that we need to have, we have, and everything that needs to be done is done. Any suggestions? Where should I start? I've been working with him for about a month, and things are very hectic and chaotic. He is an electrophysiologist.