 NEWTON, Mass.--BUSINESS WIRE--Diversified Healthcare Trust Nasdaq: DHC today announced that it has entered into a new management agreement with Navion Senior Solutions for five assisted living communities in South Carolina totaling 259 units within its Senior Housing Operating Portfolio, or SHOP. Additionally, DHC has entered into a new management agreement with Omega Senior Living for a 69-unit assisted living community in Nebraska within its SHOP. DHC has now entered into new management a 