St. Louis’ Purkinje, a company that provides clinical and billing software for physicians, has raised $10M in a fourth round of funding led by board members John Doerr and Michael Long.

The company lists Doerr as the principal owner and backer. Doerr is a partner at Kleiner Perkins Caufield & Byers, while Long is the former CEO of Healtheon. Doerr also led Purkinje’s US $11 million third round round in March 2005. The company has now raised a total of $27 million.

Update: As someone points out below, John Doerr’s brother, Thomas, is chief medical officer at the company.