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HealthSpring - Key People

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William RieflinMr. Rieflin is the Chief Executive Officer of NGM Bio and has over 20 years of industry experience. Prior to NGM Bio, he was President of XenoPort, Inc. (NASDAQ: XNPT). Prior to that, he was Executive Vice President, Administration, Chief Financial show more…
Aetna Wun Trombley show more…
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