Adeptus Health Inc. is a health care provider based in Lewisville. Adeptus Health operates free-standing emergency rooms throughout Texas and Colorado.[not in citation given] It is the parent company of the oldest and largest freestanding emergency-room network in the United States, First Choice Emergency Room. Adeptus Health became a public company in June 2014 and is traded on the New York Stock Exchange under the ticker symbol NYSE: ADPT. In 2016, Adeptus Health was included on Fortunes list of the "20 Best Workplaces in Health Care". Adeptus Health was founded in 2002 with its first emergency room located in a Dallas suburb, Flower Mound, Texas. Thomas Hall is the president and chief executive officer (CEO) of Adeptus Health. Previously, Hall was the president and CEO for NovaMed. In June 2014, Adeptus Health launched its initial public offering on the New York Stock Exchange with 4.9 million shares at $22 per share. In 2015, the company announced a partnership with University of Colorados UCHealth to develop emergency care facilities in Denver, Colorado Springs and northern Colorado, including 12 existing First Choice emergency rooms along with two new ones. Adeptus also partnered with San Francisco-based Dignity Health to establish the Dignity Health Arizona General Hospital in Laveen. In May 2016, Adeptus reached an agreement with Texas Health Resources in which it rebranded 27 First Choice Emergency Rooms, and all of the FCERs in Dallas-Fort Worth under the Texas Health name. In August 2016, the company reached an agreement with the Mount Carmel Health System to build and operate emergency rooms in Ohio under the Mount Carmel brand. Adeptus reached an agreement with the Ochsner Health System to build and operate emergency rooms in Louisiana under the Ochsner name in September 2016.