Want to become a CNS in pain management

I have no idea what the scope of practice of a CNS is in my state. I'll have to check on that. I've have worked with CNRA's and ologists for years, so I have an idea of what they do. I'm not sure if I want to prescribe; I see my area as in working with patients and families, doing assessments, education, things of that sort. Some one in the pain management at a local university hospital told me that to work in pain management, I'd need a CRNA or an NP. I wondered if a CNS could get me into the multidisciplinary team as opposed to the NP. I guess I'm unenlightened about the exact role of a CNS in some ways.
Thanks for you answers. Now I have more to think about!