DES MOINES — Iowa’s new Medicaid head said he would not close the door to adding a fourth managed-care organization to the state’s program. But he made it clear he did not want the state to continue to care for the Iowa’s most complex cases, who already have been moved from one insurance company to Iowa’s fee-for-service program.With just more than a month under his belt as the new director of Iowa’s $5 billion Medicaid program that oversees coverage for 600,000 Iowans each year, Michael Randol told The Gazette Monday during one of his first public interviews that Iowa is on track to find a third private managed-care organization.Randol, who started Dec.