I'm going through a similar situation and am frustrated as well. My certification is ACNP, and our program advisor always said 13 and over. However neither in Ohio nor Kentucky can I find any information from the BON that gives a clear cut answer. I am entertaining the opportunity to work in a derm clinic, but they also treat peds. The physicians in the practice are willing to train me to get certified as a derm NP, but is that enough to cover me for treating peds??