Dr. Keller is a native of Louisiana. He spent a large part of his early childhood living and being educated in East Africa, as his father moved the family to Kenya to complete his Ph.D. in Political Science, and then to Ethiopia during the revolution so that he could research Ethiopian politics firsthand. He completed high school in Berkeley, California and then attended the University of California in Los Angeles for his undergraduate studies, and subsequently Duke University School of Medicine.

Dr. Keller completed his general surgery internship, residency and research fellowship at Tulane School of Medicine, where he participated actively in various experimental and clinical research projects. His thoracic and cardiovascular surgery residency was completed at the Carolinas Heart Institute (Sanger Clinic)in Charlotte, North Carolina. Dr. Keller is board certified in cardiovascular and thoracic surgery.

Dr. Keller is author or co-author of more than 40 scholarly publications, presentations, book chapters and abstracts, and has participated in countless experimental and clinical studies. Thus, he is intimately aware of and involved in the application and development of cutting edge technology, and dedicated to providing access to the best that medicine has to offer for his patients. He has also received scores of prestigious awards including: the Tulane School of Medicine Owl Club Award of Excellence in Teaching, the Robicsek Traveling Fellowship (Lahr, Germany) and numerous others. He maintains membership in the American College of Surgeons, The Society of Thoracic Surgeons, The Southern Thoracic Surgeons Association, and numerous other professional organizations.

His professional interests include valvular heart disease, minimally invasive valve surgery and endovascular surgery for aortic aneurysms. As a devoted father and family man, Dr. Keller has long had interest in reaching out to children in his community.