Michael Hughes, senior vice president and chief administrative officer of Buffalo, N.Y.-based Kaleida Health, will depart the organization at the end of year.

Julie Taylor, president and chief development officer of Erlanger Health System's philanthropic arm, will retire on Sept. 30, according to a news release from the Chattanooga, Tenn.-based health system.

Nisha Mills has been named COO of HCA Florida Palms West Hospital in Loxahatchee, effective Nov. 1.

David Miller, MD, has been tapped as Ann Arbor, Mich.-based Michigan Medicine's next CEO. He will step into the role July 1.

Heidi Wald, MD, departed from her role as Intermountain Health's chief quality and safety officer Sept. 13, the system confirmed to Becker's. 

Novant Health has expanded the roles of two executive team members, Dean Swindle and Sanjay Gupta, according to a Sept. 19 news release from the Winston-Salem, N.C.-based system. 

The University of Chicago Medical Center has appointed Tipu Puri, MD, PhD, as chief medical officer, according to an internal email sent to Becker's. 

Michelle Stansbury has been named associate chief innovation officer at Houston Methodist. 

Sandy Dugger has been named CEO of Platte County Memorial Hospital in Wheatland, Wyo.

Jason Troxell has been appointed president of Wausau, Wis.-based Aspirus Health's Wisconsin Northwest division.

Johnson City, Tenn.-based Ballad Health has made several leadership appointments within its 20-hospital system.

Brian Smolskis has been appointed COO of Lompoc (Calif.) Valley Medical Center.

Tom Keller is stepping down from his role as president and CEO of West Plains, Mo.-based Ozarks Healthcare for a new leadership position.

Tara Floyd, BSN, RN, is now the inaugural vice president and association chief nursing officer at Children's National Hospital.

Palm Beach Gardens (Fla.) Medical Center has named Marko Serrano Jr. CFO. 

Dustin McFarland, MSN, RN, has been tapped as CEO of Encompass Health Rehabilitation Hospital of Middletown (Del.).

The following hospital and health system president departures were recently reported by Becker's, including resignations and retirements.

Bryn Mawr, Pa.-based Main Line Health's long time President and CEO Jack Lynch plans to retire next June.

Johnson City, Tenn.-based Ballad Health has named Shana Tate chief revenue officer, according to a Sept. 17 post on her LinkedIn page. 

Jordan Herget has been named CEO of Sierra Medical Center in Reno, Nev.