AlerisLife Inc. operates and manages senior living communities in the United States. It operates through two segments, Residential and Lifestyle Services. Its senior living communities comprise independent living communities, assisted living communities, memory care, continuing care retirement communities (CCRCs), skilled nursing facilities (SNFs), and an active adult community. The company offers nursing and healthcare services; and outpatient rehabilitation clinics and fitness services. As of December 31, 2021, it owned and operated or managed, 141 senior living communities located in 28 states with 20,105 living units, including 10,423 independent living apartments, 9,636 assisted living suites, which includes 1,872 of Bridge to Rediscovery memory care units, and one continuing CCRC, with 106 living units, including 46 SNF. The company was formerly known as Five Star Senior Living Inc. and changed its name to AlerisLife Inc. in January 2022. AlerisLife Inc. was incorporated in 2001 and is headquartered in Newton, Massachusetts.