Irene Wenzel Irene Wenzel has served as Chief Procurement Officer since February 2009. Ms. Wenzel served as Senior Vice President from April 2004 to February 2009 and also as Senior Vice President of Purchasing of OSF from April 2003 to April 2004. Ms. Wenzel also served as Vice President of Purchasing of OSF from April 1998 to April 2003. Return to Executive Officers