A.M. Best Co. has withdrawn the financial strength rating of A- (Excellent) and issuer credit rating of "a-" of UnitedHealthcare of South Carolina, Inc. (UHCSC) (Greenville, SC), a former subsidiary of UnitedHealth Group, Incorporated (NYSE: UNH) (Minnetonka, MN). The withdrawal of UHCSC’s ratings follows the sale of the company to The WellCare Management Group, Inc., a wholly owned subsidiary of WellCare Health Plans, Inc. The methodology used in determining these ratings is Best’s Credit Rating Methodology, which provides a comprehensive explanation of A.M. Best’s rating process and contains the different rating criteria employed in the rating process. Best’s Credit Rating Methodology can be found at www.ambest.com/ratings/methodology. A.M. Best Company is the world’s oldest and most authoritative insurance rating and information source. For more information, visit www.ambest.com. Copyright © 2013 by A.M. Best Company, Inc. ALL RIGHTS RESERVED.