Federally Qualified Health Centers (FQHCs) are community-based healthcare providers that receive federal funding to offer comprehensive services to underserved populations. They provide primary care, preventive services, and sometimes dental and mental health care, regardless of a patient's ability to pay. FQHCs aim to improve access to healthcare in low-income areas and often operate on a sliding fee scale based on income. They are required to meet specific standards, including providing care to all patients and maintaining a governing board that includes patients, ensuring community involvement in healthcare decisions.