Alan K. Jacobson, M.D., is a staff cardiologist and the Associate Chief of Staff for Research at the Loma Linda VA Medical Center in Southern California. A native of Canada, Dr. Jacobson has been at Loma Linda since heading south in 1977 for medical school. In addition to practicing general cardiology, Dr. Jacobson has a special interest in antithrombotic therapy. He has been the medical director of the Cardiology Anticoagulation Clinic since 1990 and has overseen the initiation of both Point-of-Care testing and Patient self-testing for the monitoring of the prothrombin time. Dr. Jacobson has also been active in research relating to standardization of laboratory methods for PT determinations, clinical use of antithrombotic therapy in atrial fibrillation, evaluation of novel antithrombotic therapies and development of anticoagulant monitoring methodologies.