HCA Healthcare operates one of the largest networks of hospitals and outpatient surgery centers in the United States, primarily concentrated in fast-growing regions across the South. As a for-profit hospital operator, HCA's revenue depends on patient volumes and on the rates it negotiates with private insurers, Medicare and Medicaid for the services it provides, making payer mix, the split between different types of insurance coverage, an important driver of its profitability. The company has grown partly by acquiring hospitals and building outpatient facilities in markets with strong population growth, a strategy that has let it benefit from migration trends toward the Sun Belt over the past decade. HCA's scale gives it negotiating leverage with insurers and suppliers that smaller, standalone hospitals typically lack, though it also means its results are closely tied to regulatory changes affecting hospital reimbursement rates.