Health care is awash in data. And we’re all being tracked, maybe in ways we don’t even realize, by a new class of analysts, armed with increasingly savvy tools.

So who are these people — these data scientists — and what exactly do they do? That's what we'll answer on this episode of "Pulse Check: At Work."

First, Jonathan Sung takes us inside his data-driven projects at the Department of Transportation and Kaiser Permanente.

Then, Aneesh Chopra — who was the nation's first Chief Technology Officer and is now president of CareJourney, a firm using data to improve care — explains the skill set to get hired as a data scientist and why he thinks we need a "digital Hippocratic Oath."

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