Dr. Hemphill leaves an indelible mark as a leader in preventive cardiology and lipidology research at USC, Boston Heart Foundation and Massachusetts General Hospital, where she established the leading regional apheresis center for treatment of severe lipid disorders. Dr. Hemphill was Fellow of the American College of Cardiology, the American Heart Association, and the National Lipid Association. She served as a member of the Board of Directors of the National Lipid Association and the American Board of Clinical Lipidology. She served on the Scientific Advisory Board of the Familial Hypercholesterolemia Foundation, as President of the New England Lipid Association and as an Associate Editor of the Journal of Clinical Lipidology.