Olive AI Inc. has reached a valuation of $1.5 billion with a $225.5 million venture capital round to take its pandemic-fueled growth into overdrive, the Columbus company announced Tuesday. The 7-year-old company has raised 86% of its lifetime $448 million VC backing in the nine months since the coronavirus pandemic began. With urgent demand for more efficiency, 600 hospitals including one in five of the nation's largest health systems are now customers of its AI-powered administrative bot. Healthcare...