Hi! I'm a future (starting in the fall) midwifery student, also an L&D RN with some experience with midwifery. See if any of this helps...
Check with your insurance company by looking first at the list of providers that they cover. Sometimes midwives are in practice in the same group as OB/GYNs. Sometimes midwives have practices of their own. You could also look on the American College of Nurse midwives website, I think they may have links to help you find a midwife: http://www.midwife.org/
Midwives do tend to stay with you (or nearby) during the entire (or most of) the delivery. They use alternative methods of pain management such as breathing/relaxation, showers, bathtubs, walking, birthing balls, etc. They do tend to have lower c-section rates and less interventions (induction with medications, episiotomies, epidurals, forceps, etc).
Most certified nurse midwives that do deliveries have hospital privilages, at least in the area where they work. Usually these are the midwives that work with a group of doctors.
Midwives are a great way to have a baby (I think). I know that I will choose one for myself when I have a baby. But they aren't for everyone. Make sure that you discuss with any provider your expectations about your delivery. Also when planning to deliver a baby, go into it with an open mind with an ultimate goal of a healthy baby (not a vaginal delivery) because sometimes things can happen that are out of your control and going in with an open mind about things will help prevent you feeling disappointed. In most cases, childbirth is an uncomplicated situation with good outcomes but just allow yourself to be open-minded. Also, if you can't find a midwife in your area, remember that if you discuss your feelings about birth with an OB/GYN, you can probably still have a natural birth. Hope this helps! Sorry it's so long :)