Hilton Head Hospital and Coastal Carolina Hospital announced the appointment of new chief executive officers 
Mark O’Neil Jr 
Mark T. O’Neil Jr
Tenet Healthcare Corporation (NYSE: THC) today said that Hilton Head Hospital and Coastal Carolina Hospital announced the appointment of new chief executive officers. Mark T. O’Neil Jr. will become market chief executive officer of Hilton Head Regional Healthcare, which includes Hilton Head Hospital, Coastal Carolina Hospital and associated outpatient centers on Nov. 30, 2009. William J. Masterton will join Coastal Carolina Hospital on Dec. 1, 2009 as its chief executive officer and report directly to O’Neil.

“Mark is a proven leader with an outstanding track record in operations,” said John Holland, senior vice president of operations for Tenet’s southern states. “His experience in creating strong relationships with physicians, employees and communities will ensure that Hilton Head Hospital continues to provide outstanding service to the community.”

O’Neil most recently served as chief operating officer of Catholic Health East in Newtown Square, Pa. In this capacity, he coordinated operations for more than 100 health care facilities in 11 states with an annual operating budget of $4.6 billion. He has served in other executive positions with Catholic Health East, including executive vice president of the Mid-Atlantic division and president of Mercy Health system of Southeastern Pennsylvania. Prior to that, O’Neil served in various executive positions with United Health Services, Inc., including president and CEO.

O’Neil received a bachelor’s degree and master’s degree in business administration from Rochester Institute of Technology in Rochester, N.Y. 

Masterton, who joined Tenet in 2003, has more than 16 years of health care experience. He currently serves as the chief operating officer at Atlanta Medical Center, a 460-bed teaching hospital in Atlanta, Ga. He also served as the hospital’s chief financial officer. He has worked in a number of hospital financial roles including market chief financial officer for Iasis Healthcare Corporation’s Florida market, CFO of Palms of Pasadena Hospital, Town & Country Hospital and Memorial Hospital of Tampa. Masterton began his health care career as a consultant with KPMG Peat Marwick LLP in the Medicare and Medicaid division.

“Bill has a strong background in both hospital operations and finance and a solid record of accomplishment,” said Holland. “He established an excellent reputation within the community and among Atlanta Medical Center’s medical staff. We believe his background is well suited for his new role as chief executive officer at Coastal Carolina Hospital.”

Masterton holds a bachelor’s degree in accounting from the University of South Florida in Tampa. Additionally, he holds a master’s degree in business administration also from the University of South Florida. Masterton is a certified public accountant.