U of Rochester has some exceptional opportunities for students like your son.
The first is Rochester Early Medical Scholars (REMS), which is a direct admit to an 8-year BA or BS/MD program out of high school. One of the best aspects of it is that REMS students work closely with the adjacent hospital, med school, and clinics as undergrads. You can check it out on their website:
The second is UR’s Medical Scientist Training Program (MSTP), a joint MD/PhD doctoral program. My wife’s oncologist at Dana Farber went through this program and she is truly extraordinary, working today as both a researcher and a practicing physician. She said that when she went through the program it was free because of the PhD component. Of course this is graduate study, but I think that UR students would have an advantage gaining admission, especially if they are already in the REMS program. Check out the details on their website:
https://www.urmc.rochester.edu/education/md-phd/prospective-students/program-overview.aspx
I’m kind of curious why you are not considering Harvard or Yale? My GD went to Harvard where she was able to do research as an undergrad. She is currently applying to med school. Both Harvard & Yale have close ties to their nearby med schools.