Five Star Quality Care, Inc. operates senior living communities, including independent living communities, assisted living communities and skilled nursing facilities (SNFs). The Company operates through senior living community segment. In the senior living community segment, it operates for its own account or manages for the account of third parties independent living communities, assisted living communities and SNFs that are subject to centralized oversight and provide housing and services to elderly residents. It operates over 270 senior living communities with approximately 31,420 living units, including over 240 primarily independent and assisted living communities with approximately 28,610 living units and over 30 SNFs with approximately 2,800 living units. It owns and operates over 30 communities (approximately 3,210 living units), it leases and operates over 180 communities (approximately 20,010 living units) and manages over 60 communities (approximately 8,190 living units).