Barnard definitely likes people with interesting stories who have made real impacts on their communities, and they like high scores. You have both of those, which is good. They do also prefer near-perfect GPAs, so that bit is challenging, but it’s worth the application.
My d22 is a senior there this year and has really loved it. She is not pre-med, but one of her majors is chemistry, and she spends an inordinate amount of time tutoring pre-meds in organic chemistry. Barnard has a LOT of pre-meds, so take that into consideration.
The research opportunities are great, but as with all schools at this level, be prepared to be surrounded by brilliant people. A lot of Barnard students are really shaken when they are suddenly average. If that inspires you, apply. You definitely have a shot. If being average bothers you, choose somewhere else for ED.