Heidi raises $340m and doubles its valuation to $900m

Heidi raised $340 million, including a $100 million Series C led by Blackbird that values the company at $900 million, and $240 million in debt-like funding from General Catalyst. The company, which now supports 2.8 million weekly patient interactions, plans to expand into Asia and the Middle East while transitioning from documentation to supervised clinical agent tasks.