Is fellowship required for spine procedures?

Is it possible to perform spinal procedures like ESIs or RFAs without doing a spine fellowship? It is my understanding that insurance companies want evidence you know what you are doing such as a case log before they will pay you. If I was able to perform enough of these procedures in residency would that suffice? Thanks for any responses. I am trying to learn more about billing and the business side of medicine.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: PM&R Source Type: forums