C.R.S. § 12-245-211
12-245-211. Collaborate with physician
12-245-211. Collaborate with physician. In order to provide for the diagnosis and treatment of medical problems, a licensee, registrant, or certificate holder shall collaborate with a physician licensed under the laws of this state, except when practicing pursuant to section 12-245-202 (14). A licensee, registrant, or certificate holder shall not diagnose, prescribe for, treat, or advise a client with reference to medical problems.