Originally posted by Primate
Some programs do NOT like CDs. These are the more clinically oriented ones. The majority, however, do value the extra degree. The "top end" research programs obviously value it more and will let an average USMLE slide (usually). At the very competitive programs in the most competitive residencies, the PhD is almost required if you're not completely off the charts in other areas.
In other words, it depends, but the PhD usually is a plus.