Part of publicly traded Envision Healthcare and founded in the 1970s, it EmCare has grown rapidly in recent years. Its sales pitch to hospitals is that it can find high-quality doctors and run emergency rooms more efficiently. It offers a software program called RAP & GO (short for Rapid Admission Process and Gap Orders) that it says speeds admissions and potentially produces “significant new hospital revenue.” n addition to its work in emergency rooms, EmCare has been buying up groups of anesthesiologists and radiologists. In these hospital specialties, it is hard for patients to shop, and out-of-network billing is common. EmCare’s size and reach have made some doctors wary of criticizing its practices. EmCare said in early February that it planned to reach agreements with insurers for most of its doctors. The company also said it was working with insurers, hospitals, lawmakers and others to make sure patients get appropriate care “without creating undue financial burden.”