The United States Medical Licensing Examination (USMLE) is a three-step examination process that assesses a physician's ability to apply knowledge, concepts, and principles important for effective patient care. It is required for medical licensure in the United States and is taken by medical students and graduates. The steps include testing on basic medical sciences, clinical knowledge, and clinical skills. The USMLE is divided into three main parts: Step 1, which focuses on the understanding of basic medical sciences; Step 2, which evaluates clinical knowledge and skills; and Step 3, which assesses the ability to manage patients in a clinical setting. Passing all three steps is essential for obtaining a medical license in the U.S.