SAN FRANCISCO (Thomson Financial) - The New York Attorney General'sOffice said Wednesday it plans to file suit against Ingenix Inc., itsparent UnitedHealth Group (nyse: UNH - news - people ), and threeadditional subsidiaries, as part of an investigation into a 'scheme byhealth insurers to defraud consumers by manipulating reimbursementrates.'In addition, New York Attorney General Andrew Cuomo...