During 2016, the 18 organizations participating in the Medicare Next Generation accountable care organization (NextGen ACO) model generated net savings to Medicare of $62 million, representing a 1.1% reduction in the projected cost of care for the 477,197 aligned fee-for-service beneficiaries in 2016. Gross savings generated by the NextGen ACOs totaled about $100 million. As a group, the NextGen ACOs received shared savings payments of $38 million. In total, 14 of the 18 NextGen ACOs generated per beneficiary per month (PBPM) savings, and 4 had increased PBPM costs. On average, the estimated cost reduction in Medicare . . .