<p>Med School cares about your college GPA and an MCAT score.
On the other hand, there is no reason to think that you will NOT get those As at ANY place. Keep in mind that no UG (none!!) will measure up to academics at Med. School. If you are “afraid” now, then you do not have guts and you have to have guts to stay on this track. Whatever you decide, keep in mind that only the ones who adjust to ANY environment will be successfull here. The academic challenging are only one aspect of various challenges ahead. Got to be ready for everything.
But again, after saying all of that, you do not have a choice, you got to graduated form the 4 y college, so you got to transfer. ANY one will be challenging for pre-med, do not get this idea wrong, there is no easy one. The challenge is again in maintaining very high GPA while being engaged in many unrelated activities. So choose the UG that fits your personality and wide range of interest and has a great pre-med advisory. I am not familiar with the UCLA, somebody else may comment on this.</p>