California medical schools have many programs that appeal to applicants who want to pursue a health professional/medical career with an increased focus on serving various underserved communities. Have you looked up the PRIME programs? Since you come from a low SES background, having strong mentors is vital to your ultimate success (not just applying but graduating). Look for similar tracks at OOS schools, but understand the offerings or size may not be as robust (but this is just based on my marketing perception).