Gunther Eysenbach, MD MPH FACMI is founder, executive editor and CEO of JMIR Publications, a digital health and open science publisher, founded more than 20 years ago. Gunther is also recognized by many as one of the leading academics in the field of digital health and eHealth, is a known open access and open science pioneer, and is producer, editor and publisher of influential knowledge translation products. According to Ioannidis et al (Plos Biol 2019) he is the most cited academic in medical informatics of all times and globally. He is Adjunct Professor at the School of Health Information at the University of Victoria (Canada). He created a new scientific discipline in 2002 called "infodemiology", now recognized by WHO as a core area of practice when dealing with an "infodemic". 
He is CEO at JMIR Publications, a leading digital open-science publisher with more than 100 employees, and Growth500 company, which he founded in 1999. He also cofounded TrendMD, a Knowledge Translation tool.
He is also an angel investor in Digital Science and Digital Health startups.

He headed the first research group on cybermedicine and eHealth worldwide at the University of Heidelberg between 1999 and 2001, where his main research interest was consumer health informatics, and came to Canada in March 2002 to help establishing the Centre for Global eHealth Innovation in Toronto. For 16 years he served as Associate Professor at the University of Toronto from 2002-2018, before he shifted his focus on building JMIR Publications to disrupt scholarly publishing. 
He is author of a textbook for computers in medicine (which he wrote at the age of 24), editor of a book on computers for physicians, publisher, founding editor-in-chief of the Journal of Medical Internet Research, the leading peer-reviewed digital health journal in the world. Dr. Eysenbach has authored more than 120 publications, including almost 40 book-chapters as well as several pioneer studies and comments on cybermedicine, e-health and Consumer health informatics, published in top journals such as JMIR, JAMA, BMJ, and the Lancet.

He has also founded, organized and chaired dozens of international workshops, seminars, and conferences, including the World Congress on Internet in Medicine in 1998 and 2006, and founded the Medicine 2.0 conference series. 

In 2019, he was named the #1 most impactful scientist in medical informatics .