(UPDATE: More on the story is available here, where Walczak states that he did not resign.)

Savin Hill's Bill Walczak is out as president of Carney Hospital, sources tell the Reporter.

Walczak, the former head of the Codman Square Health Center, was not immediately available for comment. He has headed the hospital for 14 months.

Carney was part of a hospital chain owned by the Archdiocese of Boston and sold in 2010. Steward Health Care System, which has also bought up several other hospitals in the Bay State area, including Quincy Hospital, is the subsidiary of the New York-based private equity firm, Cerberus.

Steward spokesman Chris Murphy confirmed that Walczak resigned on Friday, but declined to cite a reason for the resignation. Margy Hanson, the former president of Norwood Hospital, is stepping in as interim chief at the Carney, Murphy said.

Bob Guyon, executive vice president of Steward, said at the time Walczak's hiring was announced that the Codman Square Health Center founder, who is originally from New Jersey, was a "blue-sky thinker."

“I think he was attracted to us because – just like 30 years ago- he has an opportunity to do something very unique and transformative at Carney Hospital," Guyon said. "We’re at a unique time in health care at all levels and Carney is in a unique time in its history. It’s a transformative time and [it] needs transformative leaders.”

This story was updated at 4:14 p.m. with comments from Steward.