Horizon Health Corp.

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Donald E. Steen founded USPI in February 1998 and served as chief executive officer until April 1, 2004. Mr. Steen continues to serve as chairman. Mr. Steen has served as chairman and chief executive officer of AmeriPath, Inc. since April 2004. Mr. Steen is also a member of the board of directors of Horizon Health Corporation and Kinetic Concepts, Inc.

Mike R. Bowlin served as Chairman of Atlantic Richfield Company from 1995 until his retirement in April 2000. In addition, he held the position of Chief Executive Officer from July 1994 until April 2000. From 1992 until his election to Chief Executive Officer of ARCO in 1994, Mr. Bowlin served as Executive Vice President and then as President and Chief Operating Officer of ARCO. Mr. Bowlin joined ARCO in 1969 and became President of ARCO Coal Company in 1985. He served as ARCO International Oil and Gas Company's Senior Vice President from 1987 to 1992 and President from 1992 to 1993. Mr. Bowlin serves on the Board of Directors of Edwards Lifesciences Corporation and Horizon Health Company. He is a Trustee of the Los Angeles World Affairs Council and a former Chairman of the Board of API.

Robert Lefton, President and Chief Executive Officer, joined Odyssey in October of 2005. Prior to joining Odyssey, Mr. Lefton co-founded and served as President and CEO of SemperCare, a national operator of long term acute care hospitals. Prior to SemperCare, Mr. Lefton held several executive positions including President and COO of Horizon Health Corporation. Mr. Lefton also served as CEO of several acute care hospitals.

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