Why does a doctor have an MB after his name instead of an MD?

A doctor may have "MB" after their name, which stands for "Bachelor of Medicine," derived from the Latin "Medicinae Baccalaureus." This designation is commonly used in countries following the British medical education system, where graduates earn the MB degree before obtaining their medical license. In contrast, "MD," or "Doctor of Medicine," is often used in the United States and some other countries to denote the same level of medical training. Thus, the difference reflects variations in medical education systems rather than differences in qualifications.