Do you have one AC database now? And will continue to have only one? And all you are doing is switching out one NP for another?
YES, only one data base for the clinic, yes will only have one and add users as needed. Yes, just retired (inactivated)NP1 and added NP2 so that she could see pts and chart with her own name and numbers.
I don't see why there should be any cost at all. Each Provider is a charge and has their own support/backup charge.
Do your NP's prescribe? Yes, I am an NP, run the practice and prescribe every day. I also only bill under my own numbers to avoid any issues with incident to billing. In Texas we have a collaborating physician so he does not see my pts, I work under my APRN license.