How to pick a pediatrician?

FTM here! So since the appointment doesn’t get scheduled until after the baby is born, how do I pick a pediatrician? Like do I just tell them I want this pediatrician and then they put me on the list?

The one I’m looking at is taking new clients right now, so I guess what I’m asking is how do I reserve my spot to make sure I still get him when baby is born? Or do they even do that? Lol sorry, super naïve!