For the first time in its more than 100-year history, the Greenville Health System won’t have Greenville in its name. Starting next year, GHS and Midlands-based Palmetto Health will officially retire their names and start going by Prisma Health, which is the largest hospital system in South Carolina and top 50 in the United States. GHS and Palmetto Health leaders made the announcement Tuesday morning at campuses in Greenville and Columbia.