Philosophy is an unusual choice for a pre-med major, to be sure. The Medical School Admissions Requirements (MSAR) book for 2000-2001 shows that only 0.5% of medical school applicants were Philosophy Majors in 1998.
However, 50.2% of Philosophy majors were accepted to medical school--much higher than, say Biology majors at a mere 39.9%). In the previous year, the acceptance rate for Philosophy majors was 53%!