inVentiv Health, Inc. has signed a definitive agreement to acquire Campbell Alliance, a management consulting firm serving the pharmaceutical and biotech industries. The company also recently signed an agreement to purchase i3 from Ingenix.

Paul Meister, executive chairman of inVentiv Health, will serve as chief executive officer. Mr. Meister is founder and chief executive officer of Liberty Lane Partners, LLC, a private equity company that acquired inVentiv in August 2010. Previously, Mr. Meister served as chairman of the board of Thermo Fisher Scientific, Inc. and vice chairman of Fisher Scientific International, Inc. Blane Walter, formerly chief executive officer of inVentiv, will remain on the board of directors as vice chairman and will continue to advise the company’s strategy.

With the addition of i3 and Campbell Alliance, inVentiv will realign its organization under three self-operating segments: Clinical, Consulting and Commercial. These will report to Mr. Meister and the company’s board. Campbell Alliance’s John and Ann Campbell, chief executive officer and president, respectively, will continue to lead the organization and, along with their management team. Operating under the Campbell Alliance brand, the organization will be based in Raleigh, NC. inVentiv’s existing consulting business, Advance Insights, will be folded into Campbell Alliance.

“We are thrilled to welcome both Campbell Alliance and i3 to inVentiv Health,” said Mr. Meister. “John and Ann Campbell have built a truly impressive organization that brings together industry expertise and proven methodologies with deep, long-standing client relationships. i3 is among the industry’s top CROs, with exceptional clinical talent and resources around the world. As we pursue our strategy of becoming the world’s leading provider of best-in-class outsourced solutions to healthcare clients, Campbell Alliance and i3 will serve as critical segments of our business, expanding our ability to meet client needs and driving our future growth.”

The financial terms were not disclosed. The acquisition is expected to close in 1Q11.