(a) The following ACO participants or combinations of ACO participants are eligible to form an ACO that may apply to participate in the Shared Savings Program:
(1) ACO professionals in group practice arrangements.
(2) Networks of individual practices of ACO professionals.
(3) Partnerships or joint venture arrangements between hospitals and ACO professionals.
(4) Hospitals employing ACO professionals.
(5) CAHs that bill under Method II (as described in Sec. 413.70(b)(3) of this chapter).
(6) RHCs.
(7) FQHCs.
(b) Other ACO participants that are not identified in paragraph (a) of this section are eligible participate through an ACO formed by one or more of the ACO participants identified in paragraph (a) of this section.