Dr Ann McPherson came to prominence as author of the best-selling novel Confessions of a Teenage Health Freak.
She runs the award-winning website healthtalkonline.org, a database of patient experiences covering over 40 different illnesses and health conditions, gathered through in-depth qualitative research.
She has also become a high-profile campaigner in favour of assisted dying since being diagnosed with terminal pancreatic cancer, and has lobbied the Government arguing for a change in the law.
This list appeared as part of Pulse’s top 50 influential GPs 2011. Click here to see the rest of the list, and the top 20 influential non-GPs.