The resume is a standard of job applicants all over but with medical jobs, the best approach would be a chronological format which enumerates your past employment or experience. This gives you the most chances of showing off your colorful career to your interviewer hastening the screening process for you and them. most hospitals and medical clinics have applicants send in their resumes, opting for phone or tele-conferencing interviews due to the hectic schedules of the hospital staff who may have to deal with you.
Be very professional even with such informal forms of interview for the image you project is carried into your career. Never count of people forgetting for a doctor in one hospital may be a board member in the other so be careful what you say for it will haunt you for sure, if not, in the very near future. These people have very good memory and are very choosy with their people so be very careful whom and what you say.