Following graduation from medical school, he began his career at the Madigan Army Medical Center in Tacoma, Washington in 1981, serving there until he was transferred to the Walter Reed Army Medical Center in Washington, D.C., in 1983. Following his discharge from the United States Army in 1987, he was appointed as Chair of the Department of Community Health and Ambulatory Care at the District of Columbia General Hospital, serving in that post until 1990. From 1990 to 1991, he served as Acting Commissioner of the District of Columbia Department of Health, and as Director of the Emergency Ambulance Bureau in the District of Columbia Fire and Emergency Medical Services Department. He returned to service as the Director of the Emergency Ambulance Bureau from 1994 to 1995. In 1995, he was appointed as Deputy Secretary for Public Health Services at the Maryland Department of Health and Mental Hygiene serving in that post until his appointment as Secretary in 1999. He is a resident of Gaithersburg, Maryland.
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