There are 58 ACOs in CMS' Next Generation model for 2018, including 17 new participants, CMS data shows.

Most ACOs participating in the Next Generation model are veterans of the Medicare Shared Savings Program and the Pioneer ACO Model. This year, five of the Next Generation ACOs are new to ACO programs, as pointed out by Hunter Sinclair, vice president of value-based care consulting at The Advisory Board. The Next Generation program requires taking on more financial risk than other ACO models. However, it also offers a bigger payoff.

There were 44 ACOs participating in the 2017 Next Generation program, as Prospect ACO CA dropped out early in the game. Another three dropped out ahead of 2018: Beacon Health, Monarch Health Plan and Premier ACO of Ohio.

Below are the 17 ACOs joining the Next Generation model for 2018:

1. Accountable Care Coalition of Tennessee (Houston, Texas)*
2. Best Care Collaborative (Fort Myers, Fla.)*
3. CareMount ACO (Mount Kisco, N.Y.)*
4. Central Utah Clinic (doing business as Revere Health) (Provo, Utah)
5. Health Leaders Medicare ACO Network (Baton Rouge, La.)
6. Lester E. Cox Medical Centers (Springfield, Mo.)*
7. Mary Washington Health Alliance (Fredericksburg, Va.)
8. Mission Health Coordinated Care (Paterson, N.J)*
9. NEQCA Accountable Care (Braintree, Mass.)
10. OneCare Vermont Accountable Care Organization (Colchester, Vt.)
11. Primaria ACO (Indianapolis)
12. Primary Care Alliance (Mt. Dora, Fla.)
13. Reliance Next Gen ACO (Farmington Hills, Mich.)
14. Reliant Medical Group (Worcester, Mass.)
15. South Shore Physician Hospital Organization (South Weymouth, Mass.)
16. Torrance (Calif.) Memorial Integrated Physicians
17. UW Health ACO (Madison, Wis.)

* These organizations are new to ACO programs