Since the Affordable Care Act (ACA) was enacted in 2010, provisions that increase access to insurance coverage have generated widespread policy attention and contentious public debate. By contrast, other important provisions of the ACA, such as the expansion of the National Health Service Corps and federally qualified health centers (hereafter referred to as health centers), generated almost no conflict. Federally qualified health centers are community-based health care organizations that, with federal funding, provide primary care in underserved areas. Through these programs, ACA funding increased the number of primary care locations, services, and clinicians available to medically underserved rural and urban communities. This expansion was particularly important given research linking primary care to improved health outcomes and increased health equity. 1 Federally Qualified Health Centers: Background While significant funding increases are a recent phenomenon, health centers have a long history of federal support dating back to the first $51 million appropriation from Congress in 1967. In 1990, federal legislation augmented health center reimbursement from Medicare and Medicaid. Following a $2 billion investment in health centers through the American Recovery and Reinvestment Act of 2009 (ARRA), the ACA infused an additional $11 billion over 5 years (2011-2015). By2020,1400federallyqualifiedhealthcenterswere operating 14 500 health care sites, with locations in every state, US territory, and the District of Columbia, 2 with an enacted federal appropriation of approximately $5.6 billion. Today, approximately 16% of health center revenue comes from competitive federal grants awarded by the Health Resources and Services Administration (HRSA). This funding largely benefits individuals insured through Medicaid and Medicaid expansion, as well as individuals whoareuninsured.Anadditional43%ofhealthcenterrevenue is derived from Medicaid reimbursement and 8% from Medicare. 3 Foundation and state funds, as well as private insurance, supply most of the other revenue. Prior to enactment of ARRA and the ACA, federally qualified health centers were providing care for an estimated 18.8 million patients. By 2020, an estimated 30 million people received primary care services in these centers, including 9 million children. 2 Overall, health centers have more than tripled the number of patients served since 2000. At federally qualified health centers, primary care is defined broadly. An array of services, often available onsite, includes behavioral health and medical and dental care. Transportation to and from the health center is often available, reducing missed appointments. Some centers also include food banks, em-VIEWPOINT