Tahlequah, Okla.—The nation’s most populous federally recognized Tribe also boasts the largest, by square footage, and most comprehensive health center operated by a Tribe in Indian Country. The Cherokee Nation Health Services (CNHS) is the largest tribally-operated health care system in the United States. It opened Cherokee Nation Outpatient Health Center, a 469,000-square-foot, four-story outpatient health facility, on the campus of the W.W. Hastings Hospital campus in Tahlequah in October 201...