The Advance Payment ACO Model provides upfront and monthly payments to Accountable Care Organizations (ACOs) participating in the Medicare Shared Savings Program. This is intended to help providers coordinate care and generate savings for Medicare more quickly. Eligible ACOs include physician groups and those in rural areas with limited access to capital. Participation in the Advance Payment Model and Shared Savings Program is voluntary for providers and Medicare beneficiaries can continue seeing any provider they choose. Payments to ACOs include a fixed upfront amount, a variable amount based on the number of beneficiaries, and monthly stipends of varying amounts depending on the ACO size. The goal is to incentivize high quality care delivery at a lower cost to Medicare.