With a NEET UG score of 637, your son has an excellent chance of securing a seat in a prestigious medical college. Some prestigious medical colleges in India are:

1. All India Institute of Medical Sciences (AIIMS), New Delhi
2. Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh
3. Christian Medical College (CMC), Vellore
4. Armed Forces Medical College (AFMC), Pune
5. Maulana Azad Medical College (MAMC), New Delhi
6. Banaras Hindu University (BHU), Varanasi
7. King George's Medical University (KGMU), Lucknow:
8. Manipal Institute of Technology (Manipal), Karnataka
9. Amrita Institute of Medical Sciences and Research Centre (Amrita), Kochi
10. Vellore Institute of Technology (VIT), Vellore

For more information about colleges, you can click the colleges predictor link attached below.

https://medicine.careers360.com/neet-college-predictor?icn=neetug-cp-lp&ici=search-section_c360-home