National Health Investors, Inc. is a real estate investment trust. The Company specializes in sales, leasebacks, joint-ventures, senior housing operating partnerships, and mortgage and mezzanine financing of need-driven and discretionary senior housing and medical investments. It operates through two segments: Real Estate Investments and Senior Housing Operating Portfolio (SHOP). The Real Estate Investments segment consists of real estate investments, leases, and mortgage and other notes receivables in independent living facilities, assisted living facilities, entrance-fee communities, senior living campuses, skilled nursing facilities and a hospital. It has approximately 193 healthcare real estate properties located in 33 states and leased primarily pursuant to triple-net leases to 27 tenants. The SHOP segment is comprised of two ventures that own the operations of independent living facilities. This segment has over 15 properties located in eight states with a combined 1,732 units.