I think it's just mostly behavioral questions, like tell me about a time you did this or tell me about a time when x happened and what did you do about it... I'll prepare by listing and remembering...
I applied to St Joseph Medical Center on 2/27, got a call to schedule interview on 3/4, interviewed on 3/14 (last week) and was told I'd get a call this week if I get an offer but still haven't heard...