What level of involvement are you looking for? Bachelor-degree level individuals can participate in day-to-day trial operations (recruitment, consenting, scheduling). However, securing funding and trial design, analysis, and publication are under the leadership of doctorate-level investigators. By numbers most are MDs and PhDs in drug research, but there are numerous PharmD investigators as well. Academic PharmD fellowship programs are designed to provide experience in all aspects of clinical research thus preparing the trainee to be a primary investigator on clinical trials.