As a threepeater myself, what You want to do is make sure you know why the schools rejected you and improve on that. Second, you need to have that personal statement revised and edited by a professor or someone who knows more about the process and what they're looking for. Third, apply "smart". By this time, you're probably desperate to get into "a" school rather than just one specific school, if your mentality is that you only want to get into one particular school, i'd stop and smell the roses because you have to be open. Apply only to schools that you would actually consider going to. Choose 10-15 schools if you have to. Choose schools who accept many out of state applicants. Buy the official ADEA guide to know these stats. Shadow, shadow, shadow, different doctors and specialties and show you're still committed to this and interested in learning about it. good luck
btw, i did these things and got into multiple schools this past cycle. so it's definitely possbile!