The qualifying exams for MBBS degree is the same for everyone. A huge percentage of medical seats are literally purchased by wealthy parents for their kids. Yet the concern is always about low caste physicians, not nepotistic physicians.
I'm not saying that someone with a lower exam score cannot be a better doctor than someone with a higher score, but I would assume there would be a strong correlation
Once again, most of the students who qualify in the entrance exam with a lower score are the middle-high income class, donations and payments based upper caste students.
In all my years in India, not once has anyone complained about the upper caste doctors who have literally purchased a seat in medical school, including yourself. Their only concern is caste. The racism is very loud and very clear.