 NASHVILLE, Tenn.--BUSINESS WIRE--HealthStream, Inc. Nasdaq: HSTM, a leading provider of workforce and provider solutions for the healthcare industry, announced today results for the first quarter ended March 31, 2021. Revenues of 63.5 million in the first quarter of 2021, up 3 from 61.6 million in the first quarter of 2020. Operating income of 3.3 million in the first quarter of 2021, down 54 from 7.2 million in the first quarter of 2020, which comparison was negatively impacted by a 