(IDX Systems Corporation, South Burlington, VT, www.idx.com) One of the largest healthcare information systems companies in the country, acquired in 2006 by GE Healthcare (www.gehealthcare.com), a unit of the General Electric Company. Founded in 1969, IDX provides a broad range of products for integrated delivery networks, group practices, management service organizations, hospitals and health plans. The company's software automates patient registration, billing, scheduling and data management functions. IDX also sells hardware and provides installation, maintenance, and services. See EHR.