(a) This section applies only to an entity, other than a health maintenance organization, that:
(1) by itself or through a subcontract with another entity, undertakes to arrange for or provide medical care or health care services to enrollees in exchange for predetermined payments on a prospective basis; and
(2) accepts responsibility for performing functions that are required by:
(A) Chapter 222, 251, 258, or 1272, as applicable, to a health maintenance organization; or
(B) Chapter 843, Chapter 1271, Section 1367.053, Subchapter A, Chapter 1452, or Subchapter B, Chapter 1507, as applicable, solely on behalf of health maintenance organizations.
(b) An entity described by Subsection (a) is subject to Chapter 1272 and is not required to obtain a certificate of authority or determination of approval under this chapter.