Senior Housing Properties Trust is a real estate investment trust. The company operates its business in following segments: The Triple Net Senior Living Communities segment provide short term and long term residential care and dining services for residents. Properties in this segment include leased independent living communities, assisted living communities and skilled nursing facilities. The Managed Senior Living Communities segment provides short term and long term residential care and dining services for residents. Properties in this segment include managed independent living communities and assisted living communities. The third operating segment includes properties where medical related activities occur but where residential overnight stays and dining services are not provided. Properties in this segment include MOBs. Senior Housing Properties Trust was founded on December 16, 1998 and is headquartered in Newton, MA.