Medical examiners and DOT doctors overlap in several ways; however, they differ in that all DOT doctors are medical examiners, while not all medical examiners are qualified as DOT doctors. A medical examiner is a broad term that includes various types of healthcare professionals who can perform medical examinations, including physicians, chiropractors, physician assistants, and advanced practice nurses. However, to serve as a DOT doctor, a medical examiner must receive specific training related to the physical and mental requirements of commercial motor vehicle drivers and pass the Federal Motor Carrier Safety test to become registered to perform DOT examinations. This specialized training prepares them to assess commercial motor vehicle drivers against set standards and guidelines, ensuring that they meet all of the necessary health criteria to operate safely.