- August 2005: I joined Wikipedia.
- November 2006: I created Wikipedia:Identifying reliable sources (medicine) (aka MEDRS).
- Between 2006 and 2009: I wrote one Featured Article (Ketogenic diet) and two Featured Lists (List of people with epilepsy and Timeline of tuberous sclerosis). I collaborated with two other editors on List of polio survivors and one other editor on List of people with hepatitis C.
- December 2010: I bought a DSLR camera and became more active on Commons.
- November 2013: I created Commons:Photo challenge to inspire photographers to take new photographs for Commons. The monthly challenges attract both newbies and regulars.
- December 2016: My photo of the Royal Albert Hall won 2nd prize in the international stage of Wiki Loves Monuments 2016.
- May 2017: My photo of Jubilee and Munin, Ravens at the Tower of London, won Picture of the Year 2016.
- March 2018: I wrote the essay Wikipedia is not YouTube (WP:NOTYOUTUBE). This essay generalised concerns first posted as "Osmosis: Wikipedia medical articles hijacked by paid editors working for private foundation" at talk:Jimbo Wales. An RFC on commercially produced topic-summary videos saw the community reject them and the removal of around 300 such videos from Wikipedia.
- January 2020: I was involved in drafting and commenting at the RFC on pharmaceutical drug prices.
- April-June 2020: I participated at the Arbitration case on Medicine, which led to two editors being topic banned. Subsequently, the community removed drug prices from over 500 articles.
- I have no greater medical qualification than a Scouts First Aid Badge.
- I have 89 Featured Pictures on Commons.
- I peer reviewed medical articles and help other editors get their articles to Featured status. For my help with Dementia with Lewy bodies, Sandy Georgia generously included me as co-nominator of that Featured Article.
Stevenfruitsmaak created Wikipedia:Manual of Style/Medicine-related articles in July 2006. In November 2006, I started editing MEDMOS and realised some of the advice concerned sourcing rather than style. So I removed that text and created and expanded it to Wikipedia:Identifying reliable sources (medicine). Stevenfruitsmaak created the MEDRS and MEDMOS shortcuts. I worked alongside many editors on both guidelines, expanding, polishing and pushing them towards community acceptance. MEDMOS became an official Wikipedia guideline in April 2007 and MEDRS in August 2008.