LocationsAspirus St. Luke’s Clinic - Duluth - Cardiothoracic SurgeryMeet Our Team Cardiothoracic Surgery Abby Bushey, PA-C Cardiothoracic Surgery View Profile Brittany Kuehn, PA-C Cardiothoracic Surgery View Profile Steven Levin, MD Cardiothoracic Surgery View Profile Hebroon Obaid, MD Cardiothoracic Surgery View Profile Margaret Romano, PA-C Cardiothoracic Surgery View Profile