HCSC doubles down on Medicare Advantage as market share declines

Health Care Service Corp. plans to expand its Medicare Advantage business into another 150 counties next year as the insurer seeks to gain a foothold in an increasingly competitive market for private Medicare plans. 

The expansion represents the largest in the history of the not-for-profit company, which sells Blues Cross and Blue Shield plans in Illinois, Montana, New Mexico, Oklahoma and Texas. The insurer must obtain clearance from…