Cherokee Nation is the largest federally recognized Native American tribe with more than 470,000 registered tribal citizens. There are over 250,000 citizens residing in Oklahoma and over 130,000 living on the Cherokee Nation reservation. Cherokee Nation Health Services (CNHS) is the largest tribally operated health care system in the United States. CNHS is a growing, multifaceted health care system. In the clinical setting, the system accommodates over 1.6 million patient visits annually throughout 12 health care facilities. These include 10 tribal health centers, one employee health center, and one tribal hospital. Additionally, CNHS offers a wide array of community, social, and mental health programs such as behavioral health, community health nursing, cancer prevention, diabetes prevention, Women Infants and Children, emergency medical services, environmental health, health research, emergency and risk management, clinical quality improvement, and quality management. CNHS administers programs to deliver effective patient care, coordinate services, manage IT, and oversee facilities. The departments addressed above include, but are not limited to, Health IT, Health Privacy and Compliance, and Institutional Review Board (IRB), Research, and Health Finance.