o mag.jpgO, The Oprah Magazine has announced several new hires, filling out the editorial department under new editor-in-chief Susan Casey.

Among the new hires are former Marie Claire executive editor Lucy Kaylin, who has been named deputy editor; Patrick Mitchell, who is taking the role of design director; former Publishers Weekly editor-in-chief Sara Nelson, who has been named books director; former Prevention senior editor Tyler Graham, who will be health and environment editor and Jennifer Rainey Marquez, formerly of Women’s Health, who will take on the role of senior editor.

“As we prepare for O’s tenth anniversary year in 2010, I couldn’t be more pleased that Lucy, Patrick, Sara, Tyler and Jennifer are joining our team,” said Casey, who joined the magazine earlier this summer. “They all come to the magazine with incredible talent and experience in their respective areas and I’m confident they will be a great asset to O as we move into our next phase of growth.”

O also named Dr. Mehmet Oz a contributing editor. He will write a regular health column for the magazine starting with the October issue. The magazine also said that features director Pat Towers will be retiring this month, although she will continue to work on special projects for the magazine.

And in other Oprah Winfrey news, Sirius XM has announced the launch of Winfrey’s exclusive 24/7 Sirius XM radio station. Starting on Monday, episodes of “The Oprah Winfrey Show” will now be broadcast on satellite radio the morning after they air in syndication on TV. The channel will also replay classic “Oprah Show” episodes as well as shows hosted by Gayle King, Dr. Oz, Maya Angelou and sex therapist Dr. Laura Berman.

After the jump, the full release about the O hires, as well as longer bios.

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