UC Irvine Medical Center head to step down

The head of University of California-Irvine Medical Center plans to step down in March. Maureen Zehntner, 60, has been on the job less than eight months and had served as the troubled hospital's interim chief executive since 2005. She cited personal reasons for her resignation, effective March 6. Administrators will use the four months' notice Zehntner gave to devise a transition plan and form a search committee to find a replacement, said a UC Irivine spokesman.