The "Maximizing Outcomes for Moms through Medicaid Improvement and Enhancement of Services Act," or MOMMIES Act, seeks to significantly enhance healthcare access and quality for low-income pregnant and postpartum individuals under Medicaid and the Children's Health Insurance Program (CHIP). A core provision extends continuous Medicaid and CHIP coverage for these individuals from the current 60-day period to a 1-year period following pregnancy, with states having the option to extend it further. This change, effective January 1, 2027, ensures that mothers retain essential health coverage during a critical postpartum phase. Furthermore, the bill mandates that states provide full Medicaid benefits to pregnant and postpartum individuals for at least one year, ensuring comprehensive medical assistance. It also requires the coverage of oral health services , including preventive, diagnostic, periodontal, and restorative care, for pregnant and postpartum individuals under both Medicaid and CHIP. To support these expanded benefits, the bill includes a maintenance of effort provision, preventing states from imposing more restrictive eligibility standards or reducing the scope of benefits for low-income pregnant individuals. States will also receive a 100% Federal Medical Assistance Percentage (FMAP) for additional expenditures resulting from these new requirements. A significant component of the bill is the establishment of a 5-year Maternity Care Home Demonstration Project . This project will provide grants to states to implement or expand maternity care home models, with the overarching goals of improving maternal and infant outcomes, advancing birth equity, and reducing health disparities, particularly for underserved populations such as Black, Indigenous, and other people of color, LGBTQ+ individuals, and those in rural areas. Participating states will partner with eligible entities like birth centers and federally qualified health centers to deliver coordinated, evidence-based, and person-centered maternity care. These maternity care homes will offer a range of services, including risk assessments, tailored care plans, care coordination, and essential support services addressing social determinants of health like food access, housing, and transportation. The project emphasizes culturally and linguistically appropriate care, training for healthcare professionals in cultural humility and anti-racism, and the integration of perinatal support services such as doulas and community health workers. The Secretary is required to select at least 10 states, ensuring geographic diversity and inclusion of states with significant disparities, and at least one territory. The bill also addresses primary care access by reapplying the Medicare payment rate floor to primary care services furnished under Medicaid. This provision expands the types of eligible providers to include obstetrician-gynecologists, certified nurse-midwives, certified professional midwives, and advanced practice clinicians, ensuring they are reimbursed at a rate not less than 100% of the Medicare rate. It also ensures that managed care entities comply with these payment standards. Finally, the legislation mandates two important reports and guidance. The Medicaid and CHIP Payment and Access Commission (MACPAC) must publish a report on doula services coverage under State Medicaid programs, identifying barriers and recommending strategies to increase access and ensure sustainable wages for doulas. Following this, the Centers for Medicare & Medicaid Services (CMS) Administrator will issue guidance to states on increasing access to doula services. Additionally, the Government Accountability Office (GAO) is required to report on State Medicaid programs' use of telehealth to increase access to maternity care , examining program characteristics, outcomes, barriers, and providing recommendations.