American Hospital Association | 116,267 followers on LinkedIn. The AHA represents nearly 5,000 hospitals and health systems and serves their patients and communities. | The American Hospital Association (AHA) is the national organization that represents and serves all types of hospitals, health care networks, and their patients and communities. Close to 5,000 hospitals, health care systems, networks, other providers of care and 37,000 individual members come together to form the AHA. Through our representation and advocacy activities, AHA ensures that members'​ perspectives and needs are heard and addressed in national health policy development, legislative and regulatory debates, and judicial matters.