Go4Ellis does not provide liability insurance to Athletic Trainers. Just like with any other per diem job, it is up to the athletic trainer to ensure that they carry an appropriate level of personal liability insurance. There are many insurance companies that offer per diem policies, often called moonlighting policies, for athletic trainers at very reasonable rates.
NATA offers a 10% discount for any members through Mercer. The link is http://www.natainsurance.com/