Khosla leads $3 million Series A for health start-up ZocDoc

Khosla Ventures, the venture capital firm launched in 2004 by Sun Microsystems founder Vinod Khosla, has led a $3 million Series A round for ZocDoc, a service for locating and booking doctors' appointments online.

ZocDoc is sort of like a cross between Yelp and Lifebooker--but with its focus on physicals, not facials. Members can search for nearby doctors, filter by insurance plan matches, find out what other members have had to say about them, and book the appointments through the site. Currently, it only serves the New York boroughs of Manhattan and Brooklyn, but has plans to expand nationwide--that's what the funding is for.

"ZocDoc is addressing a real need in health care," Khosla said in a release Monday. He won't be joining the start-up's board of directors, but his partner David Weiden will. "The Internet has the potential to fundamentally improve access to care, and the company has gained initial traction towards this long-term vision," he said in the statement.

Plenty of much bigger names have been getting on the online health care bandwagon, but most of them have been focusing on medical records, not appointment booking.