John York Net Worth
Born in Ohio, York earned both his M.D. and Ph.D. from the University of Kansas. He specialized in pathology and taught at the University of Missouri, where he also ran a successful diagnostic lab. Before joining the business of football, York made his fortune in the medical field by building and eventually selling DeYor Laboratories, a pathology services company. The sale of that business in the early 1990s provided him with the capital to invest more deeply in the DeBartolo family’s ventures, particularly the 49ers....