National Health Investors, Inc. is a self-managed real estate investment trust (REIT) specializing in sale-leaseback, joint-venture, mortgage and mezzanine financing of need-driven and discretionary senior housing and medical investments. The Company is engaged in the business of owning and financing healthcare properties. Its portfolio consists of lease, mortgage and other note investments in independent living facilities, assisted living facilities, entrance-fee communities, senior living campuses, skilled nursing facilities, specialty hospitals and medical office buildings. Its other investments include marketable securities and a joint venture structured to comply with the provisions of the REIT Investment Diversification Empowerment Act of 2007 (RIDEA) through which it invests in facility operations managed by an independent third party. As of December 31, 2016, it had investments in real estate, mortgage and other notes receivable involving 205 facilities located in 32 states.