; (5) perinatal health workers; (6) relevant health insurance issuers; (7) hospitals, health systems, midwifery practices, freestanding birth centers (as such term is defined in paragraph (3)(B) of section 1905(l) of the Social Security Act ( 42 U.S.C. 1396d(l) )), Federally-qualified health centers (as such term is defined in paragraph (2)(B) of such section), and rural health clinics (as such term is defined in section 1861(aa) of such Act ( 42 U.S.C. 1395x(aa) )); (8) researchers and policy experts in fields related to maternity care payment models; and (9) any other stakeholders as the Secretary determines appropriate, with a particular focus on stakeholders from demographic groups with elevated rates of maternal mortality, severe maternal morbidity, maternal health disparities, or other adverse perinatal or childbirth outcomes. (c) Considerations In establishing the Demonstration Project, the Secretary shall consider any alternative payment model that— (1) is designed to improve maternal health outcomes for individuals from demographic groups with elevated rates of maternal mortality, severe maternal morbidity, maternal health disparities, or other adverse perinatal or childbirth outcomes; (2) includes methods for stratifying patients by pregnancy risk level and, as appropriate, adjusting payments under such model to take into account pregnancy risk level, including consideration of the appropriate transfer of patients by pregnancy risk level; (3) establishes evidence-based quality metrics for such payments; (4) includes consideration of nonhospital birth settings such as freestanding birth centers (as so defined); (5) includes consideration of social determinants of maternal health