Physician practices that become patient-centered medical homes can expect to achieve modest improvements in health care quality, according to a new Commonwealth Fund–supported study in the Annals of Internal Medicine. The researchers, led by Lisa M. Kern, M.D., of Weill Cornell Medical College, compared medical home practices—all of which used an electronic health record (EHR) system—with two types of traditional practices, those using paper records and those using EHRs.