Evolent Health (NYSE:EVH) and the Advisory Board Co. (NSDQ:ABCO), which helped launch Evolent in 2011, are contemplating a merger, “people familiar with the matter” told Reuters. Evolent, which makes software for hospitals moving from fee-for-service to an outcomes-based business model, was founded in 2011 by its top 2 investors, the University of Pittsburgh Medical Center Advisory Board Co., a healthcare research firm. […]