The so-called "One, Big Beautiful Bill," spanning over 900 pages, includes the largest cuts to Medicaid in the program's 50-plus years. What to know.

How the Centers for Medicare & Medicaid Services (CMS) Works . On July 30, 1965, President Lyndon B. Johnson signed into law a bill that established the Medicare and Medicaid programs.

President-elect Donald Trump has picked Dr. Mehmet Oz to serve as the administrator for the Centers for Medicare and Medicaid Services, a key federal agency that oversees health insurance coverage ...