Patient Opinion was devised by Sheffield GP Dr Paul Hodgkin and was launched in January 2006.
Feedback is provided to subscribing trusts, enabling them to take patients' suggestions and make improvements to services.
The website has been shortlisted for the New Statesman New Media Award for Contribution to Civic Society.
Dr Hodgkin said: 'We wanted to use the power of the latest technology to support our aims of enabling patients to share their experiences of healthcare.'
Other nominees for the awards include sites created by the BBC and The Guardian.
The winners will be announced on 24 July.