Tony Lennen, who has led Major Hospital in Shelbyville for 15 years and has been one of the city's most energetic economic development leaders, resigned unexpectedly on Monday.
Lennen wouldn't comment on the move, according to the Shelbyville News. Hospital officials deferred questions to Lennen, saying it was a personnel matter.
However, board members accepted the resignation and praised Lennen for his leadership and leaving the hospital in stable financial condition.
The board "understands your need to respond to new challenges and opportunities," the board said in a letter to Lennen.
Lennen's departure does not signal that the hospital is about to change hands, the board said, or suggest a change in direction.
Hospital Vice President and Chief Operating Officer Jack Horner has been named interim president and CEO.
Lennen expanded the hospital and recently added an orthopedic center.
The orthopedic center is at Intelliplex, the state certified technology park along I-74 that the hospital played a key role in establishing.
However, Lennen was hounded by many Shelbyville residents over why more technology companies haven't located in Intelliplex.