I do not have an extremely strong feeling for where the navigation placement should go. Most importantly, I want it to work with the overall style of the site. The three sites I included as examples all have elements I like. Of the three, I prefer URL1 and URL2 the most. I would be very happy if this site came out looking like either of those. There is also an established logo for the practice that I will need to upload.
Finally, please keep in mind that this is a medical practice for teen girls and women. It is an obstetrics (pregnancy and delivery) and gynecology (female reproductive health) practice and should reflect a feminine touch.