Capital Clinical Research Associates The company is a private clinical research center located in the North Bethesda/Rockville area in suburban Maryland. Our team is made up of board-certified psychiatrists, experienced clinicians and highly qualified research coordinators. Our medical director and principal investigator supervises research and patient care throughout each study. The company has worked with a number of major pharmaceutical companies and contract research organizations and has conducted research in treating mood and anxiety disorders, sleep disorders and attention deficit disorder, and are constantly looking to expand the scope of our areas of study.