Advice solicited for BS/MD programs

Just wanted to get some info regarding S, ORM, a TX HS junior at a large public school (~500 students).

PSAT: 99th percentile (220+ NMSQT score).
GPA : 4.5 (W) ranked in the top 20 in class
APs thus far: Calc AB, Calc BC, Physics 1, Physics C (E&M, Mechanics), Chemistry, Human Geography, World History. (Got 5s in 6 of them and 4s in 2 of them).
APs in Junior: Biology, Statistics, English Language & Composition, US History with dual enrollment in Organic Chemistry I (A), Organic Chemistry II & Economics at a local university.
SAT: Expect to get 1550+

ECs:

  1. Did well at national level in Social Science Olympiads and buzzer based competitions in the Junior Varsity category
  2. Helped local university with summer math workshops for middle school students.
  3. Won prizes in UIL - Science, Social Studies and Current Events; Science Club, Math Club, Robotics Club etc., and represented school in these competitions.

Summer Plans:

  1. Volunteer for local hospital,
  2. Participate in summer workshops on biomedical research, and
  3. possibly join a research group at the local university.

Any idea of how he can strengthen his chances to get into a top school for Chemistry/Biochemistry (pre-med track) or for BS/MD at Brown, Rice or [NU]

Any publications?

None yet. I am hoping to do research this summer in a committed manner and hope I can at least present my research.

Please do not confuse users by switching voices. If you are the parent, speak like the parent by saying “he.” If 2 people are sharing an account, it’s not allowed.

Thank you.

none yet. My S is hoping to get research done this summer so that he present his research at poster sessions etc.

Need to get some physician shadowing experience