Bon Secours Health System, Marriottsville, Md., named Mark Nantz as CEO of its local integrated health system in Greenville, S.C., effective Feb. 1. Nantz, 44, becomes top executive at the Roman Catholic Bon Secours St. Francis Health System, according to a news release. Nantz currently works as president of Carolinas Medical Center-Northeast in Concord, N.C. He takes over the role at Bon Secours previously held by Valinda Rutledge, who was promoted to a job as market leader for Bon Secours’ Kentucky and South Carolina operations in October 2007, while retaining the role as CEO of St. Francis, but is no longer with the system, a spokeswoman said. … The Metropolitan Nashville Hospital Authority board voted to name Jason Boyd as its interim CEO after CEO Reginald Coopwood told the board that he planned to take the same job with the Regional Medical Center at Memphis. The Memphis public hospital, commonly known as “the Med,” extended an offer to Coopwood, but he has not been hired yet, said hospital spokeswoman Angie Herron, the week before the Christmas holiday. Coopwood, who turned 50 on Jan. 3, has been CEO of the Nashville public hospital district since 2005. Previously, he was CMO of the authority’s flagship, Nashville General Hospital. Coopwood also is a board- certified surgeon who holds associate professorships with Vanderbilt University School of Medicine and Meharry Medical College, both in Nashville. Boyd, 33, will assume the interim CEO duties on Feb. 1, the Nashville authority said. Boyd joined the hospital authority as COO in August 2008. Prior to that, he was COO of Magnolia Regional Health Center, Corinth, Miss., for four years. … Tenet Healthcare Corp., Dallas, said it hired J. Michael Cowling to be CEO of Palm Beach Gardens (Fla.) Medical Center. Cowling, 58, has worked for two other investor-owned hospital chains. His most recent position was as a division vice president with Health Management Associates, Naples, Fla. In that role, he oversaw the operations of two hospitals. Cowling also worked as a hospital CEO with HMA. Prior to that, he was Chicago market president for Vanguard Health Systems, Nashville. … Rhonda Anderson was named CEO of Cardon Children’s Medical Center in Mesa, Ariz., effective immediately. Anderson, a registered nurse, was most recently pediatric service line administrator of Banner Health, the Phoenix-based not-for-profit hospital system that owns Cardon Children’s. Anderson was previously pediatric administrator of Cardon Children’s and chief nursing officer, senior administrator and COO at Banner Desert Medical Center, Mesa. Her age was not available. Todd Werner, who has been working in the dual capacity as CEO of both Cardon Children’s and Banner Desert, will continue in his role at Banner Desert. The new Cardon Children’s Medical Center opened on Nov. 2, 2009. … Marc Augsburger was named president and CEO of Horn Memorial Hospital, a stand-alone hospital in Ida Grove, Iowa. Augsburger, 42, replaces Dan Ellis, who resigned from the position earlier this year, and Ed Maahs, who served as interim CEO. Augsburger formerly served as vice president of operations at Caro (Mich.) Community Hospital.