I need surgery. If the hospital I choose is in my network, can I assume that all the doctors who work there are also in my network?

Definitely not. You want to check the provider directory and make sure any doctors, hospitals or even physical therapists are in the network of the plan you have. If your surgeon wants to use a hospital or facility that is out of your plan’s network, find another surgeon, or you’ll be in for a big surprise and not in a good way.