Ohio Health hospital in Mansfield celebrated its 100th anniversary on Thursday, May 10th. Ohio Health President Jean Halpin said May 10th, 1918 the hospital then located in downtown Mansfield, moved to its current location on Glessner Avenue. Halpin says Ohio Health is the largest hospital in an hour radius and is the largest employer in Richland County. The Ohio Health hospital in Mansfield alone has 2,000 employees.