(a) prescribing or administering drugs as defined in this chapter as a
treatment, therapy, or professional service in the practice of his or
her profession; or
(b) using invasive procedures as a treatment, therapy, or professional
service in the practice of his or her profession. For purposes of this
subdivision, "invasive procedure" means any procedure in which human
tissue is cut, altered, or otherwise infiltrated by mechanical or other
means. Invasive procedure includes surgery, lasers, ionizing radiation,
therapeutic ultrasound, or electroconvulsive therapy.