Recorded in Rosa's Fresh Pizza shop (@rosasfreshpizza), How Do I Philly interviews Mason Wartman about his journey from crunching numbers on Wall Street to rolling dough in Philadelphia. Mason rocketed to public attention with his pay-it-forward pizza program that helps feed the homeless in the city. He's since been featured on CNN, NPR, and The Ellen Show and has given out over 150,000 slices of pizza.