 NASHVILLE, Tenn.--BUSINESS WIRE--HealthStream Nasdaq: HSTM, a leading provider of workforce and provider solutions for the healthcare industry, today announced that it has entered into a definitive agreement to acquire Change Healthcares staff scheduling business, which includes their market-leading ANSOSTM Staff Scheduling ANSOS application and related products. Highlights: ANSOSTM Staff Scheduling applicationwhich is contracted by over 300 hospitals and health systems, along with rela 