The center for rural health created under section 2612, as part of the development of the biennial rural health plan required under section 2223, shall develop a plan that provides for the creation of a set of rural health networks. Each rural health network shall consist, at a minimum, of 1 essential access community hospital, rural referral center, or regional referral center described in section 21566, and 1 rural primary care hospital as described in section 21567.