Pillar Clinical Research, LLC Healthcare Pillar Clinical Research, LLC Visit Website 3200 NE Red Hawk Dr. Bentonville, AR 72712 (479) 367-2688 About Map About Pillar Clinical Research specializes in mental health research. Located in Bentonville, AR, our exceptional team has a strong focus on patient care. We hope to change the future of mental health treatment and decrease the stigma of mental illness! What's Nearby? Distance: 5 10 15 20 25 50 mi.