At first glance, the buildings didn’t look unusual. Empty storefronts. Generic office signs. Businesses that barely seemed open. But behind many of them was a massive flow of Medicaid money — part of a growing network of home healthcare companies accused of exploiting loopholes in the system and billing taxpayers for questionable services on a staggering scale.On this introductory episode of Behind The Story, investigative reporter Luke Rosiak explains how he used government data, computer coding, and old-fashioned reporting to uncover a billion-dollar fraud scheme hiding in plain sight. Learn more about your ad choices. Visit podcastchoices.com/adchoices