Are you applying this cycle? If so, maybe you can take a list of your work and activities. They may be able to advise you on something that you may be lacking and need to work on. To be memorable, it may help to talk about something unique about yourself that got you interested in medicine and/or why that is your top choice medical school.
In my experience, the diversity office of most of the schools I visited were very helpful and interested in recruiting students. Everyone was open and willing to discuss any issues that they thought were present (at least the students were). I hope this helps.