Thanks everyone. I haven't been back to work yet. I'm not sure what I'm going to do tomorrow. I do know I am NOT going to apologize. I hate conflict, and thinking about confronting this problem makes my heart race and palms sweat, but I have reached my limit. The Irish red temper has made an appearance. This coworker has become a bully, and I am not going to be pushed any more than I have been. If that means I have to find another job, so be it, even in this economy there's a need for my services

I wouldn't take this crappy belligerent attitude from the doctor I work for, I sure as hell ain't gonna take it from an assistant that regularly doesn't show up for work anyway.