My clinical and health-services research focuses on measuring and improving the quality, coordination, and delivery of health services, especially for older adults. I study the effects of health information and information technology on physicians' practices and patients' outcomes. I have conducted studies of specialty referral, patient-physician videoconferencing, and other forms of telecommunication to improve healthcare. Current research includes development, implementation, and study of information systems to promote clinical handoffs, management of medications, patient-centered care, and clinical decision support.