Courtesy Photo Diane Postler-Slattery appears in this undated photo provided by MyMichigan Health.

ALPENA — MyMichigan Health President and CEO Diane Postler-Slattery and her husband died after a plane crash in Florida on Tuesday evening, the health system reported Wednesday.

Postler-Slattery was a key contributor in the transition of ownership of the former Alpena Regional Medical Center from Alpena County to then-MidMichigan Health in 2016.

Postler-Slattery served as head of the health system since 2013.