Mark Wien is the co-founder of the Micro Equity Development Fund, a for-profit, social initiative focused on connecting investors with investment opportunities in microfinance, particularly micro-equity. Mark also co-founded an e-commerce site which launched in March 2014. After six years in finance, Mark begins medical school this fall with hopes of bridging his business background with medicine to improve access to and quality of healthcare worldwide. He will be joining Hippo as a frequent correspondent exploring the topics of public health, the intersection of medicine and business, healthcare, and microfinance. Twitter: @MarkWien; Mark.Wien@themedf.com.