Sorry, I don't know much about it. All I know about the waitlist is that they take people from it all the way out to the week before school starts. One thing's for sure, your being waitlisted does not predict how well you will do in medical school. So far, the ones I know who were initially waitlisted are the ones doing extremely well in school.
My advice is that you can try to email the dean of admissions to see how you can make your application stronger, write a letter of intent if NYCOM is your first choice, and update the admissions department regarding your application maybe once a month or so, just so they know you are very interested.