This legislation amends the Social Security Act to mandate that Medicare Advantage (MA) plans include essential community providers in their service area networks. The core purpose is to ensure reasonable and timely access to a broad range of healthcare services for low-income individuals , those residing in rural areas , or individuals in health professional shortage areas . Under the new standard, MA organizations must include a sufficient number and geographic distribution of these providers and offer contracts to each available essential community provider within a plan's service area. If an MA plan does not meet this requirement, the organization must provide a detailed explanation and describe how its network will still adequately serve vulnerable populations and move towards compliance. The Secretary has the authority to deny plan approval if the justification is deemed insufficient. The bill broadly defines an essential community provider as one that predominantly serves low-income, medically underserved individuals. This definition includes Federally Qualified Health Centers, facilities funded by the Ryan White HIV/AIDS Program, Indian Health Service facilities, various types of hospitals, and mental health or substance use treatment facilities, among others.