New York-based RubiconMD, which provides a digital consult platform to connect primary care doctors with specialists, announced it has raised $13.8 million in a Series B round. HLM Venture Partners and Optum Ventures led the round, which included Centene Corporation and Blue Ivy Ventures, along with all participating investors from their Series A. RubiconMD, launched in 2013, raised a $4 million Series A round in mid-2016.