Here are the leaders of the five insurers with the most members and revenue in 2018, listed alphabetically:
1. Gail K. Boudreaux, president and CEO of Anthem. Ms. Boudreaux became president and CEO of Anthem in 2017. She was formerly CEO of UnitedHealthcare, the health insurance division of UnitedHealth Group.
2. Bruce D. Broussard, president and CEO of Humana. Bruce Broussard joined Humana in 2011. He served as CEO of McKesson Specialty/US Oncology before beginning at Humana.
3. David Cordani, president and CEO of Cigna. Mr. Cordani began serving as Cigna's president and CEO in 2009. He joined the company in 1991 from Coopers & Lybrand, which later merged with Price Waterhouse to become PwC.
4. Karen S. Lynch, executive vice president of CVS Health and president of Aetna Business Unit. After CVS Health completed its acquisition of Aetna, Ms. Lynch became executive vice president of CVS Health and president of Aetna. Before joining CVS, she served as president of Aetna.
5. David S. Wichmann, CEO of UnitedHealth Group. Mr. Wichmann became CEO of UnitedHealth in 2017. Prior to that role, he served as president of UnitedHealth beginning in November 2014, and CFO of the company from 2011 until mid-2016.