Eh that ' s just the policy at the place I work . I guess there ' s no legal reason why it wouldn ' t be open to a CCM doc or any other physician for that matter just have to find a place that ' s willing to let you work there . It ' s probably most common for the requirement to be for EM training because we ' re used to dealing with acute presentations in all age groups and have at least some EMS exposure . Some states have a prehospital physician designation with certain requirements to work in that setting . Others you just need to be employed by a prehospital agency and be covered by malpractice insurance etc . <| sep |> For RN CLs vigilance is nice less chance of being torped in your own smoke , but Superintendent is mandatory without smoke you ' re dead , so the more you have the better . Equally the more heals you have , the more close calls you can have , although it ' s rare I manage to use all my heals in a RN CL anyway