DreamWorks will become a bi-coastal studio with the opening of a New York office Monday.The new headquarters will house divisions of marketing and distribution to oversee East Coast operations in those areas. DreamWorks’ offices are located on the 22nd floor of the 650 Madison Avenue building in the Plaza District of Midtown Manhattan. Diana Loomis will head up the New York marketing department, where she will supervise all aspects of East Coast-based marketing and publicity. She will report to Terry Press, DreamWorks’ head of marketing, in Los Angeles. Loomis comes to DreamWorks from the Walt Disney Studios, where she was vice president of East Coast publicity. She joined Disney in 1986, and worked her way up through the ranks from publicity coordinator to vice president, working on campaigns for all Disney, Touchstone and Hollywood Pictures releases. The New York staff also includes Elizabeth Pless, Wendy Zipes Hunter and Meredith Blume, all reporting to Loomis. Also on the New York marketing team are Lauren Carlitz, who previously worked on field publicity and promotions for Universal; and Stacey Leinson, formerly of MGM. They will handle East Coast field publicity and promotions, reporting to head of promotions Michael Vollman in the Los Angeles office. On the distribution side are Joe Sabatino, the head of Eastern sales, who most recently served as senior veep and head film buyer for the eastern division of AMC Theatres, where he worked for more than 20 years, beginning as a film buyer. Rounding out the distribution staff are senior salesman Frank Rodriguez and salesman Joe Saladino.