Health care provider Kaiser Permanente CEO Bernard Tyson died Sunday at the age of 60, FOX Business confirmed.
Tyson had been active on social media as of Saturday, after speaking at a gathering called AfroTech.
"It is with profound sadness that we announce that Bernard J. Tyson, Chairman and CEO of Kaiser Permanente, unexpectedly passed away early today in his sleep. On behalf of our Board of Directors, employees and physicians, we extend our deepest sympathies to Bernard’s family during this very difficult time," Kaiser Permanente told FOX Business in a statement.
The California-based health care organization described Tyson as "an outstanding leader, visionary and champion for high-quality, affordable health care for all Americans."
Kaiser Permanente's board of directors named Gregory A. Adams, Executive Vice President and Group President, as interim Chairman and CEO effective immediately.
In 2013, Tyson became CEO of Kaiser Permanente, one of the nation's largest not-for-profit health plans serving 12.3 million members. Kaiser Permanente had roughly 9 million members when Tyson assumed the post.
During that same time, Tyson also grew revenue from $53 billion to more than $80 billion. He earned about $10 million in compensation in 2016, according to Modern Healthcare.
Tyson garnered praise during his time at the top of the health care provider, including his inclusion in TIME's Health Care 50 for his work boosting community health in areas in need, like West Baltimore's 21223 zip code.
His career at Kaiser Permanente began more than 30 years ago. He was born in the San Francisco Bay Area, where the company is headquartered, and attended Golden Gate University in San Francisco.
Tributes to Tyson have begun to pour in through social media.