Preferred provider organization
In health insurance in the United States, a preferred provider organization (PPO), sometimes referred to as a participating provider organization or preferred provider option, is a managed care organization of medical doctors, hospitals, and other health care providers who have agreed with an insurer or a third-party administrator to provide health care at reduced rates to the insurer's or administrator's clients.
Pwo
“"Ppo" is held for young men who have received private teaching for an average of seven to eight years. The main part of this ritual consists of examining the young man’s knowledge of navigation techniques, and further instruction by the older considered to be the most skillful navigator on the island.” Sudo, Ken-ichi (1987), “Nurturing in Matrilineal Society: A Case Study of Satawal Island.” IN: Iwao Ushijima and Ken-ichi Sudo (Eds.) "Cultural Uniformity and Diversity in Micronesia". Senri Ethnological STudies No. 21, Osaka: National Museum of Ethnology.