Thank you!
You do need to meet a minimum GRE requirement (especially for the Quantitative part), which is ~ ≥ 50th percentile. I'm not sure about the GPA, though from my experience, my overall wasn't very stellar but I had a good personal reason for it (my Biology GPA was good, though). I made up for my flaws by focusing on the more important aspects of the application: research experience, publications+manuscripts, stellar letters of recommendation, and a great personal statement. I've been a research technician for 2 years, and I think that really helped me show them I am mature enough and very prepared to go to grad school. I was very impressed by their program during my interview/visit, which helped me decide to accept their offer.
If you have any more questions, feel free to send me a message! Good luck with your application!
/EDIT: Anyone else going to head down to Columbia in the fall?