The main goal of the ENACT (ENgaging in Advance Care planning Talks) Group Visit intervention is to integrate a patient-centered advance care planning process into primary care, ultimately helping patients to receive medical care that is aligned with their values. The ENACT Group Visit intervention involves two group discussions about advance care planning with 8-10 patients who meet for 2-hour sessions, one month apart, facilitated by a geriatrician and a social worker. This study will compare the ENACT Group Visit intervention to mailed advance care planning materials.