Healthcare identity solution provider CrossChx has raised a $15 million Series C financing round from Silicon Valley Bank, Khosla Ventures, Drive Capital, NCT Ventures and Moonshots Capital. The funds will be used to expand sales and distribution of Queue, the company’s flagship patient sign-in system used in hundreds of locations across the country.

“Queue finally provides a way for patients to safely log in to healthcare, giving providers the ability to deliver a more personable level of care and returning control of patient identities back to their rightful owners – the patients themselves,” Sean Lane, Founder and CEO of CrossChx, said in a statement. “Queue signals a new era of patient registration, and this capital will provide the resources to fulfill demand and expand across the country.”

Founded in 2012, CrossChx has already signed more than 350 health systems nationwide and created more than 50 million unique patient IDs for healthcare. Its Queue patient sign-in system uses identity resolution software that accurately captures patient data, deduplicates records, catches errors in patient medical profiles, and verifies patients’ identities to prevent medical mistakes.

Previously, the company raised $15 million Series B round in April 2015.