Stephanie Oh knows what it’s like to live below the poverty line. After graduating college with a degree in bioengineering, she volunteered for AmeriCorps and subsisted on food stamps. But today, Oh gives pays it forward by using her medical education to provide free healthcare to homeless populations. style=”display:inline-block;width:300px;height:250px” data-ad-client=”ca-pub-8420654331411867″ data-ad-slot=”1313712966″> Oh is the student director…