http://bestchoice-ins.com:8000/id/335Wellmark2014-06-08T18:09:00Z2015-03-03T13:41:29ZWellmark Blue Cross and Blue Shield offers a full range of health insurance and related products and services to more than 263,000 members in South Dakota. As a member of the Blue Cross Blue Shield Association, Wellmark Blue Cross and Blue Shield is part of a national network of 42 plans that insures nearly 88.7 million people, or more than 30 percent of all Americans.