The board of directors of Milwaukee-based Northwestern Mutual Life Insurance Company recently elected John N. Balboni to its membership. Balboni is senior vice president and chief information officer of International Paper Company, the world’s largest paper and packaging company, based in Memphis, Tenn. Balboni previously served as chairman of Northwestern Mutual’s Policyowners’ Examining Committee, an independent group appointed each year to take an impartial and unrestricted look at the company’s operations, management and strategic planning.