Federally qualified health centers (FQHCs) are community-based primary care organizations designed to serve medically underserved populations regardless of immigration status, ability to pay, language, or insurance coverage. Established under Section 330 of the Public Health Service Act, FQHCs now care for more than 32 million patients nationwide, including nearly 10 million children. This article defines the FQHC model, examines the populations served and services delivered, and explores the financial mechanisms that sustain these centers. Particular attention is given to the implications of this model for pediatric care delivery, financial sustainability, and future policy challenges.