Location: Londonderry, N.H.
Three-Year Growth: 849.1%
2004 Revenue: $8.2 million
Employees: 23
Founded: 1999
What it does: Provides continuing education and distance-learning programs and materials for medical professionals. Why it's growing: Most states require their health care workers--doctors, nurses, physician's assistants, etc.--to complete a certain number of continuing education courses in order to retain their licenses. MEBN helps streamline that process, publishing medical journals and interactive media that allow people to take tests online. MEBN founder and CEO (and former nurse) Sharyn Lee says she's helped more than 700,000 people keep their licenses current.