Concentra Inc., is a national health care establishment founded in 1979 in Amarillo, Texas. The headquarters of the corporation is in Addison, Texas and runs approximately 520 urgent care locations across 44 states. The company is linked with over 1,000 physicians and 1,285 physical therapists. Concentra also offers a variety of health improvement solutions to companies and manages over 140 employer-owned medical facilities. The key areas of concentration for the firm include occupational health, physical therapy, health and wellness, and urgent care. History Concentra's forerunner was formed in Amarillo, Texas, by three physicians who opened the first occupational health facility. The same occupational health strategy was used by same physicians in their second facility, which opened in Garland, Texas in 1985. OccuCenters, Inc. managed the network of medical centers between 1985 and 1997. The parent business of OccuCenters, Dallas-based OccuSystems, Inc., combined with Boston-based CRA Managed Care, Inc. in 1997 to establish Concentra Managed Care, Inc., a publicly listed firm. The company's shares were made private in 1999, and the name was changed to Concentra Incorporated in 2001. A period of expansion followed as Concentra grew to include health-related businesses such as network services, bill review, case management, independent medical examinations, and PPO networks. Following a series of sale deals in 2006 and 2007, Concentra restricted its focus on occupational health, medical center growth, and wellness and preventive care. The firm began its urgent care project in 2007 in response to the rising need for a cost-effective alternative to hospital emergency rooms for non-emergency ailments. It required a uniform platform to support its strategic expansion goal and unify more than 330 locations in 40 states that differed in design, operational needs, and brand mark as part of this endeavor. In December 2010, Humana announced its acquisition of Concentra for approximately $790 million. Welsh, Carson, Anderson & Stowe, a New York City-based private equity firm, had previously owned a majority of Concentra's equity since 1999. Humana Inc. (NYSE: HUM) announced in June 2015 the sale of Concentra Inc. (Concentra) shares to a joint venture between Select Medical Holdings Corporation (Select Medical) and Welsh, Carson, Anderson & Stowe, a private equity fund, for approximately $1.055 billion in cash. Select Medical's acquisition of Concentra advances the organization's goal of developing a highly profitable occupational-medicine business channel to complement its existing portfolio of long-term acute care hospitals, inpatient and outpatient rehabilitation clinics, and contract