Rittenmeyer has served as CEO of Tenet Healthcare Corp. since October 2017; he was named executive chairman in August 2017. Among Tenet's most significant moves in 2019 was announcing plans to spin off of its revenue cycle subsidiary, Conifer Health Solutions. That is slated for 2021, pending regulatory approvals and other processes. For the third quarter of 2019, Tenet reported net patient service revenue was $3.6 billion, up 5.8% from the third quarter of 2018.