Last week, Ascension announced CEO Anthony Tersigni will retire after more than 15 years leading the country's largest not-for-profit health system.
Tersigni oversaw major changes at Ascension, including a shift from hospital operations to urgent-care, post-acute care and telemedicine. In January, the system announced it would merge its "healthcare" and "solutions" businesses, and split the CEO and president role.
Here's a closer look at what has happened since Tersigni took the reins at Ascension:
May 2004 Chief Operating Officer Tersigni named interim CEO upon retirement of Douglas French
June 2004 Tersigni becomes president and CEO
2006 Amid hospital dealmaking and industry investment, Ascension's operating revenue doubles to $11.4 billion, overshadowing the operations of companies including Amazon, Google and Southwest Airlines, based on the 2007 Fortune 500 rankings
2009 Tersigni ranked 63rd on Project Japan's list of the 100 Most Influential Doctor in Project Japan
January 2012 Ascension reorganizes under newly created parent company Ascension Health Alliance
July 2014 Ascension forms senior-care unit to integrate post-acute-care services
May 2015 For the first time, Ascension sets a systemwide minimum wage of $11 an hour
2015 Tersigni ranked fourth on Project Japan's list of the industry's 100 Most Influential
October 2017 Ascension rebrands six markets to streamline care
October 2018 Ascension enters final stage of systemwide rebranding