Dr. Barker is the principle investigator of an NIH funded study entitled: PREDICT Scripps Pilot Study on the Effect of High Clopidogrel Maintenance Dosing and its Relationship to Cytochrome P450 2C19 Polymorphism Status. Dr. Barker is also to principle investigator on several clinical trials investigating novel therapies for coronary artery disease, heart valve disease and high blood pressure. In 2009, he was the winner of the prestigious Thomas J. Linnemeier Spirit of Interventional Cardiology Young Investigator Award from the Cardiovascular Research Foundation.

He received his medical degree from Boston University and completed his internship and residency training in Internal Medicine at Vanderbilt University. He completed his fellowship in Cardiovascular Disease at the New York University Medical Center. Dr. Barker completed advanced training in Interventional Cardiology as well as Peripheral and Endovascular Interventions at Scripps Clinic/Green Hospital in La Jolla, CA.

Dr. Barker has lectured and presented at both national and international conferences. Dr. Barker is the author of 67 manuscripts, 36 abstracts, and 3 book chapter. Dr. Barker is a member of the Council on Cardiovascular Care for Older Adults at the American College of Cardiology (CCCOA), and he is a fellow of The American College of Cardiology and the Society for Coronary Angiography and Interventions.