FierceHealthcare: Premier is known primarily for its group purchasing prowess. But the Charlotte-based company is now showing its chops in the realm of population health. Half of the Medicare participants in Premier’s Population Health Management Collaborative accountable care organization qualified for shared savings payments. That compares to about 30 percent of the ACOs in the Pioneer and Medicare Shared Savings Program. Indeed, had the traditional Medicare ACOs achieved the same results, they could have saved about $1.4 billion last year, compared to the more modest $466 million reported by the Centers for Medicare & Medicaid Services, according to an analysis undertaken by Premier.