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Organization
12 Months Ended
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Organization
Organization
We are a real estate investment trust, or REIT, organized under Maryland law. At December 31, 2017, we owned 440 properties (466 buildings) located in 42 states and Washington, D.C. Our portfolio includes: 305 senior living communities, including independent living, assisted living, memory care and skilled nursing facilities, or SNFs; 125 properties (151 buildings) leased to medical providers, medical related businesses, clinics and biotech laboratory tenants, or MOBs; and 10 wellness centers with approximately 812,000 square feet of interior space plus outdoor developed facilities.