An interview for medical or other professional schools is for the admissions committee to assess your suitability as a candidate. Read the Interview Strategies Guide: MMI and MPI (PDF) to help you prepare.
Your application documents may include your personal autobiographical sketch, personal statement, academic standing, and MCAT scores. The interview is an opportunity for the admissions committee to look at different aspects of your candidacy. They may be trying to assess relevant skills such as communication, problem solving, and critical thinking. They may also consider your knowledge of the health care system and medical profession and any experiences that you have had giving you insights into the profession and confirming your desire to be part of the medical community.
The admissions committee will also be evaluating your level of commitment along with personal characteristics that will make you a suitable candidate for the role of a doctor or other health care professional. The interview is an excellent opportunity for you to highlight and share your skills, experiences and the attributes that will make you an ideal candidate.