designate a rural health care agency or agencies for clinical treatment or training, including hospitals, community health centers, migrant health centers, rural health clinics, community behavioral and mental health centers, long-term care facilities, Native Hawaiian health centers, or facilities operated by the Indian Health Service or an Indian tribe or tribal organization or Indian organization under a contract with the Indian Health Service under the Indian Self-Determination Act [
25 U.S.C. 5321 et seq.].