C.R.S. § 25-3.5-1102

As used in this part 11: (1) “Emergency medical responder” means an individual who has successfully completed the training and examination requirements for emergency medical responders and who provides assistance to the injured or ill until more highly trained and qualified personnel arrive. (2) “Physician” means a person licensed pursuant to article 240 of title 12 , in good standing, who authorizes and directs, through protocols and standing orders, the performance of students-in-training enrolled in department-recognized emergency medical responder education programs. (3) “Registered emergency medical responder” means an individual who has successfully completed the training and examination requirements for emergency medical responders, who provides assistance to the injured or ill until more highly trained and qualified personnel arrive, and who is registered with the department pursuant to this part 11.