Founded in 1974, Accordis offers business office outsourcing services to the health care industry. The company assists clients through revenue enhancement, and administrative cost reduction services. Accordis is a wholly owned subsidiary of HMS Holdings, which is listed on NASDAQ under the symbol HMSY. Headquartered in New York City, Accordis also operates offices in Chicago, Dallas, and Los Angeles. Its third party billing and follow-up services include payment roadblock elimination, adjudication tracking and account disposition. The company also offers collection and emergency medical transportation services.