ZocDoc lands unicorn valuation by Erin Griffith @FortuneMagazine August 20, 2015, 1:37 PM EST E-mail Tweet Facebook Linkedin Share icons Over a year ago, ZocDoc filed paperwork to raise a large new round of funding which has put the doctor’s appointment services company’s valuation over $1 billion, as first reported by Fortune. Finally, the company has closed the round. ZocDoc has raised $130 million for a total value of $1.8 billion, it said in an announcement today. Scottish investment management firm Baillie Gifford and London-based investment firm Atomico led the round, with participation from existing investor Founders Fund. The company’s online services allow patients to find doctors in their health insurer’s network, book appointments, and fill out paperwork in advance. Doctors pay to appear in ZocDoc’s search results, and the company says it is on track to double its number of clients this year. However, the company has not disclosed how many clients it has, how much it charges doctors, or what its revenue numbers are. Based in New York, ZocDoc previously raised $97.9 million in venture funding. The prior round, a Series C worth $75 million led by Goldman Sachs and DST Global, the fund run by Russian entrepreneur Yuri Milner, valued the company at $700 million. ZocDoc now has 600 employees, 50 of whom were added in the last 14 months. In 2013, Aetna AET reportedly offered to acquire the company for $300 million. Earlier this week, a Business Insider report accused the company’s sales people of creating a work environment that is hostile to women. A ZocDoc spokesperson provided the following response to the report: We hear time and again from our team members that ZocDoc is a great place to work. We try every day to uphold a positive culture that encourages people to speak up and use their voices to make our company better. We have a long-standing policy against any forms of unlawful harassment or discrimination and never condone illegal drug use. Our sales team is an important engine of the company and, like any maturing sales organization, is evolving. Over time, we have strengthened our recruiting and training programs and continue to emphasize and support quality performance. The company managed to earn a spot on Fortune’s Best Companies To Work For list as no. 11 in healthcare. The rankings are determined by employee surveys, including 264 from ZocDoc. Subscribe to Data Sheet, Fortune’s daily newsletter on the business of technology.