Five Star Senior Living Inc. operates and manages senior living communities in the United States. It operates through Senior Living, and Rehabilitation and Wellness segments. Its senior living communities comprise independent living communities, assisted living communities, continuing care retirement communities (CCRCs), skilled nursing facilities (SNFs), and an active adult community. The company offers nursing and healthcare services; and rehabilitation and wellness services. As of December 31, 2020, it operated 268 senior living communities consisting of 29,271 living units comprising 243 primarily independent and assisted living communities with 28,316 living units, and 9 SNFs with 955 living units located in 31 states. The company was formerly known as Five Star Quality Care, Inc. and changed its name to Five Star Senior Living Inc. in March 2017. Five Star Senior Living Inc. was founded in 2001 and is headquartered in Newton, Massachusetts.