Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
Cerebrovascular and Endovascular Neurosurgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,370
10,757
0.619
* Total Citation Counts Rankings
Ranking Based On Selection :2
neurosurgery
spine surgery
oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,186
5,365
0.407
* Total Citation Counts Rankings
Ranking Based On Selection :3
Neurosurgery
Physics
Radiation Therapy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,049
2,632
0.238
* Total Citation Counts Rankings
Ranking Based On Selection :4
neuroscience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,294
1,584
0.299
* Total Citation Counts Rankings
Ranking Based On Selection :5
neurosurgery
neurooncology
spine
epilepsy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,988
1,403
0.470
* Total Citation Counts Rankings
Ranking Based On Selection :6
Endovascular and Cerebrovascular Neurosurgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,455
2,326
0.947
* Total Citation Counts Rankings
Ranking Based On Selection :7
skull base surgery
neuro oncology
complex spine surgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
156
126
0.808
Michael E Kelly
University of Saskatchewan
Saskatoon, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,370
10,757
0.619
Cerebrovascular and Endovascular Neurosurgery
Daryl Fourney
University of Saskatchewan
Saskatoon, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,186
5,365
0.407
neurosurgery
spine surgery
oncology
Fred H Geisler
University of Saskatchewan
Saskatoon, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,049
2,632
0.238
Neurosurgery
Physics
Radiation Therapy
Ivar Mendez
University of Saskatchewan
Saskatoon, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,294
1,584
0.299
Adam Wu
University of Saskatchewan
Saskatoon, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,988
1,403
0.470
neurosurgery
neurooncology
spine
epilepsy
Lissa Peeling
University of Saskatchewan
Saskatoon, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,455
2,326
0.947
Endovascular and Cerebrovascular Neurosurgery
Luke Hnenny
University of Saskatchewan
Saskatoon, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
156
126
0.808
skull base surgery
neuro oncology
complex spine surgery