I have had the same concerns with NorthShore and the Vernon Hills site. I call and ask to have a nurse from my doctor's office call me, and find that I have to call again the next day and ask again, because no one followed up.
Additionally, scheduling an appointment with any of the NorthShore sites seems to be a big run around. It is difficult to directly access a physician's office without going through the entire central system. I am not at all impressed with NorthShore.