Free clinics are often understaffed and need all the help they can get in terms of handling their patient load. In my junior year, I did women's health counseling at a free clinic, meaning I saw patients *by myself*, even though I had practically no experience and even less training (my Spanish language background sure helped, though).
This pre-med experience is far superior, in my opinion, to academic medical centers where an attending, a resident, a couple of nurses, a medical student, and a nursing student all swarm around one patient, while the lowly pre-med gets to refill the icewater.