National Health Investors, Inc., a real estate investment trust (REIT), invests in health care properties, primarily in the long-term care industry in the United States. As of December 31, 2008, it had investments in real estate assets and mortgage notes receivable investments in 123 health care facilities consisting of 83 long-term care facilities, 1 acute care hospital, 4 medical office buildings, 14 assisted living facilities, 4 retirement centers, and 17 residential projects for the developmentally disabled in 17 states. The company has elected to be treated as a REIT for federal income tax purposes and would not be subject to federal income tax, if it distributes at least 90% of its REIT taxable income to its shareholders. National Health Investors, Inc. was founded in 1991 and is based in Murfreesboro, Tennessee.