Radio frequency ablation in Tucson?

My girlfriend is likely to need radio frequency ablation (RFA) on her spine for...well, likely the rest of her life. We're in southwestern New Mexico and she's been dealing with the Spine Center in Durango, Co, which is a great place, but Tucson would be a lot closer. Does anyone know of a really good spine specialist in the Tucson area who does RFA? It'd have to be someone with a really good reputation for her to trust them.