I don’t mean to sound harsh, but if you are not the best of the best in science and you want to go to medical school, don’t go to Berkeley undergrad. In order to get into medical school, you need a really good GPA. It is a lot harder to get that really good GPA at Berkeley than at some other places. It’d be much more beneficial to go to a school that’s smaller and would give you more opportunities for research and leadership, which you’ll need both of to get into medical school. On average in the country, only half of med school applicants get into any medical school. This average is no higher for applicants from Berkeley. However, many other smaller/more supportive schools actually have med school acceptance rates closer to 70-80% among their students who apply. Just food for thought. I personally love Berkeley and think it’s a great school, but I would never recommend it as an undergrad to a potential doctor.
My cousin just graduated from Berkeley class of 2015, and she advised me that you have to be a self-starter to be successful there. You have to fight to get placement in the classes you want when you want, and you have to know how to study on your own. She was very successful, and ended up going to Stanford for grad school. But she also had friends who ended up dropping out junior or senior year under the stress.
To answer your chance, I’d say it’s possible if your grades were really good junior year, and with great ACT/SAT scores. Berkeley is hard to get into regardless, even with amazing everything.