Adventist Health Castle (AHC) is a community hospital system that provides inpatient and outpatient care to people who primarily live on the windward side of the Hawaiian island of O’ahu. It is one of 20 hospitals within the nonprofit, faith-based, Adventist Health system headquartered in Roseville, CA. Employing 1,046 people, AHC’s main hospital is in Kailua, HI, with two professional centers and a rural health clinic also located on the windward side of the island. The Center’s services include 24-hour emergency care, inpatient acute care, the Vera Zilber Birth Center, a Joint Care Center, inpatient behavioral health services, multi-specialty surgical services, cardiovascular services, neurological services, the Hawaii Center for Metabolic and Bariatric Surgery, outpatient services, chemotherapy clinic, imaging services, and the Wellness and Lifestyle Medicine Center.