Who We Are Established in 1972, the Northwest Portland Area Indian Health Board (NPAIHB or the Board) is a nonprofit tribal advisory organization serving the forty-three federally recognized tribes of Oregon, Washington, and Idaho. Each member tribe appoints a Delegate via tribal resolution, and our Delegates meet quarterly to direct and oversee all activities of NPAIHB. What We Do NPAIHB Delegates create and update a strategic plan, which contains four main functional areas: health promotion and disease prevention, legislative and policy analysis, training and technical assistance, and surveillance and research. NPAIHB houses the Northwest Tribal Epidemiology Center (EpiCenter), operates numerous health promotion and disease prevention projects, and is active in Indian health policy.