Are there any questions you would like to ask me?

"I intend to participate in community outreach programs offered, but I would like to pick and choose the ones I feel I can do best; are these mandatory for staff membership or voluntary?"

Any interview should end with this question. It shows the interviewer's respect and courtesy for you, the interviewee. Your answer will also demonstrate to the interviewer where your priorities lie in your career. If you feel there are things you need to know, ask now. Besides the answers being informative, it gives you someone to hold accountable if expectations were given but not fulfilled after the fact.

"What is your re-admission rate at your facility?"