NHI (National Health Insurance) provides universal healthcare coverage, ensuring equitable access to medical services. Key entities involved include CMS (Centers for Medicare & Medicaid Services), responsible for administering healthcare programs; NIH (National Institutes of Health), funding medical research; hospitals and clinics, providing patient care; healthcare professionals, delivering medical services; and advocacy organizations, representing the uninsured. Research institutions provide evidence-based insights, while the Kaiser Family Foundation offers healthcare data and analysis. These entities contribute to the NHI ecosystem, making healthcare more accessible and affordable.