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Rear Admiral Stephen C. Redd, MD
Director, Office of Public Health Preparedness and Response

Photo of Stephen ReddA Rear Admiral and Assistant Surgeon General in the United States Public Health Service, Dr. Stephen Redd has served 29 years as a Commissioned Officer. He has investigated outbreaks such as Legionnaires’ Disease, developed strategies to control malaria, and worked to eliminate measles in the US. A graduate of Princeton and Emory universities, he received his medical degree with honors and trained in medicine at Johns Hopkins. Rear Admiral Redd has authored more than 120 scientific publications and received numerous awards, including the Public Health Service Distinguished Service Medal and the Meritorious Service Medal.


Bob Ruiz
Deputy Director

Photo of Bob RuizBob Ruiz joined CDC as a Presidential Management Fellow in 2000 after an extensive 23 year career with the United States Coast Guard. As a PMF, he served as project officer in the National Center for Infectious Diseases overseeing several contracts and the Epidemiology and Laboratory Services Cooperative Agreement. His project officer experiences prepared him to manage and oversee the PHEP cooperative agreement in 2003. He served in several CDC National Centers with distinction prior to his selection for the Senior Executive Service (SES) Candidate Development Program.

Bob received his Bachelor of Science from Southern Illinois University at Carbondale in 1998 and a Masters in Health Care Administration from Southeastern University in Washington, DC.

Daniel M. Sosin, M.D., M.P.H., F.A.C.P.
Deputy Director and Chief Medical Officer

Photo of Daniel M. Sosin, M.D., M.P.H., F.A.C.P.Daniel Sosin is the Deputy Director and Chief Medical Officer of the Office of Public Health Preparedness and Response (PHPR) at the Centers for Disease Control and Prevention (CDC). In this role, he is the lead science advisor and provides scientific representation for preparedness on behalf of the PHPR Director and CDC. He serves as a liaison to CDC programs and external partners and assures strategy and program coordination for PHPR in medical and public health preparedness and response.

Dr. Sosin began his CDC career in 1986 as an Epidemic Intelligence Service officer assigned to Kentucky. He served as Associate Director for science at the National Center for Injury Prevention and Control, coordinating national injury surveillance and extramural research activities. He also served as director of CDC's former Division of Public Health Surveillance and Informatics, where he managed notifiable disease surveillance systems and tools and introduced CDC to biosurveillance concepts.

Dr. Sosin joined PHPR in 2004 as the Senior Advisor for Science and Public Health Practice. In 2008 Dr. Sosin initiated the Biosurveillance Coordination Unit at the request of the CDC and PHPR directors. In this role he was the federal lead for the development and integration of the nationwide biosurveillance capability for human health. Dr. Sosin served as acting PHPR director from January 2009 through July 2010.

He is board certified in preventive medicine and internal medicine and a fellow of the American College of Physicians. He received his medical degree from Yale University School of Medicine, his master's degree in epidemiology from the University of Washington School of Public Health, and his bachelor's degree in biology from the University of Michigan.