HORSHAM, Pa.--( BUSINESS WIRE )-- NextGen Healthcare Information Systems, Inc ., a wholly owned subsidiary of Quality Systems, Inc. (NASDAQ: QSII) and a leading provider of healthcare information systems and connectivity solutions, today announced a reseller agreement with Nuance Communications, Inc. (NASDAQ: NUAN), a leading provider of speech-driven clinical documentation, clinical language understanding and analytics solutions to more than 450,000 physicians and 10,000 healthcare institutions worldwide.