With big data playing an increasingly critical role in healthcare and with the pervasiveness of archaic infrastructure and lack of data portability in health systems and hospitals, data warehousing startup Health Catalyst sees a big opportunity to help fix this problem. And, at least for now, investors appear eager to buy in. In January, the startup raised a whopping $33 million in series B financing from Norwest Venture Partners (NVP), Sequoia Capital and Sorenson Capital.