After completing residency, gynecologists must pass the United States Medical Licensing Examination (USMLE) or the Comprehensive Osteopathic Medical Licensing Examination (COMLEX-USA) to obtain a medical license. Additionally, board certification from the American Board of Obstetrics and Gynecology (ABOG) is highly recommended. This involves passing both written and oral exams and demonstrates a high level of competence in the field.