Accolade has raised $50m from a consortium of investors that included McKesson Ventures, which previously injected $22.5m in 2015.

McKesson Ventures, the corporate venturing arm of pharmaceuticals distributor McKesson, yesterday returned to co-lead a $50m funding round in US-based healthcare concierge platform Accolade.

The round was co-led by Andreessen Horowitz, Carrick Capital Partners and Madrona Venture Group, with participation from Cross Creek Advisors and Madera Technology Partners.

Founded in 2007 by the principals of investment firm Accretive Health, Accolade operates an on-demand service that combines technologies such as machine learning and big data analytics with human advisors and clinical…