Matthew Berger has been appointed vice president of tax for the National Multi Housing Council. He had been economist and press secretary for the Senate Committee on Small Business and Entrepreneurship.

Timothy Cost is the new global chairman of health care and executive vice president of APCO Worldwide. Most recently, he had been senior vice president of corporate affairs for Wyeth, a global health care company.

Mary Langowski is now with the health care group at DLA Piper. Langowski was formerly a senior public policy adviser at Alston & Bird.

Stephanie Lundberg has joined Burson-Marsteller as manager of its issues and crisis group. Lundberg was House Majority Leader Steny Hoyer’s (D-Md.) former press secretary.

Jason Meath is now president of advocacy and advertising for Xenophon Strategies. Meath spent the past eight years with the Stevens & Schriefer Group.

Chelsie Redalen has been promoted to director of government relations for the National Pork Producers Council. Redalen was deputy director of government relations.

Brian Vanderbloemen is now vice president of federal public affairs at McGuire Woods Consulting.