WellStar Health System's new Paulding Hospital will open its doors April 1. The eight-floor, 295,000-square-foot facility cost roughly $92 million, and it was built to replace the existing Paulding Hospital, which joined what is now the WellStar family in 1994. Mark Haney, president of WellStar Paulding Hospital, said there are several reasons behind the replacement, a big one being that the county is the second-fastest growing in Georgia. Paulding's population of 142,000 has seen a 75 percent growth rate since 2000. Another factor is the age of the hospital, which was built in 1958.