Mark McClellan

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Mark Barr McClellan (born June 26, 1963) was sworn in as Administrator for the Centers for Medicare and Medicaid Services in the United States Department of Health and Human Services on March 25, 2004. In this position, he was responsible for administering the Medicare and Medicaid programs. Following the resignation of Health & Human Services Secretary Tommy Thompson in 2004, McClellan was mentioned as a possible replacement, …