Applicants must be an enrolled member of a federally recognized tribe, located in Oklahoma, and have a completed WSS application. Four groups qualify: CPN tribal members, CPN employees (any race), CPN WSS clients, and CPN daycare parents or guardians — so CPN citizenship is one path in, not a requirement. Service area covers Seminole, Pottawatomie, Lincoln, Payne, Cleveland, and Oklahoma (if otherwise unserved) counties.