Rank my Extracurriculars

Okay to begin with, your leadership extracerriculars are really strong. That's really going to play to your advantage in the leadership experience essays that schools typically have. The internship is also interesting, since you want to go into Pre-med, but I'm assuming your going to use that as a personal hobby/interest and not an academic one. I'm also a volunteer tutor myself. What is the research publication on? If something bio related will definitely help you IF you can adequately describe what you did and claim the experience as your own. Volunteering at a hospital is also good to show your academic interest. The problem is that since your experiences are so vast, I can't really rate them since they excel in their own categories (leadership, community, academic interest/passion, etc). If you really want another extracurricular, some kind of own initiative related to science/bio would be helpful (even an advocacy project). If you can talk about your experiences well enough and claim it as your own, I think you should be okay for a T40. However, I don't really have that much experience in college admissions. Just want to point out that what's more important than quantity is quality so instead of finding another extracurricular, it might be better to try to advance the ones that you already have so that they're stronger.