Avoid USACS like the plague.
You are nothing more than a widget maker for this company. My group was taken over by them through a series of hospital mergers. Since they took over, our ED has been in decline.
Hour cuts, constant schedule changes, constant under staffing. Push to cut physician hours and staff with more mid levels. Forced us to pay ~$30,000 at the end of last year because they "restructured" the shares you get.