Anatomy scan advice!

I am in the process of switching doctors because I absolutely hate my OB. They give me absolutely no info. They listen to the heart beat and don't tell me what the baby's heart rate is. They didn't even tell me that I was RH-. Anyway, I can't switch doctors in time to have my anatomy scan with the new doctor so I am stuck having my anatomy scan with the old doctor. I just want to make sure I have a lot of questions to ask so I can make sure to get the information I need about my growing baby. So what are some things I need to make sure I know before I leave the doctors?