He is a national leader in general medicine and primary care and is President of the Association for Chiefs and Leaders in General Internal Medicine. Dr. Phillips' research efforts focus on innovations in primary care, end-of-life care, and integrative medicine. He leads efforts at BIDMC to develop a patient-centered medical home within the hospital-based teaching practice, and serves on the Massachusetts coordinating council on the patient-centered medical home. He co-chaired the HMS Primary Care Advisory Group that led to the creation of a Center for Primary Care at HMS, and currently serves as director of the Center.