Total 2,403,032 scientists, country 221, and institutions 24,466 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![W Couldwell](/user/assets/images/profile/no-profile-photo.png)
Neurosurgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
366
195
0.533
* Total i10 IndexRankings
Ranking Based On Selection: 2
![John Kestle](/user/assets/images/profile/no-profile-photo.png)
Neurosurgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
156
114
0.731
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Michael Karsy](https://cdn.adscientificindex.com/pictures/0b/1681626.jpg)
Neurosurgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
100
89
0.890
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Ramesh Grandhi](https://cdn.adscientificindex.com/pictures/e3/1681768.jpg)
neurosurgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
93
82
0.882
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Vijay Ravindra](https://cdn.adscientificindex.com/pictures/65/1682009.jpg)
Neurosurgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
48
0.842
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Mark A Mahan](https://cdn.adscientificindex.com/pictures/b5/1681840.jpg)
Neurosurgery
Peripheral Nerve
Spine
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
43
0.796
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Marcus D Mazur](/user/assets/images/profile/no-profile-photo.png)
Neurosurgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
30
0.698
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Tyler S Davis](/user/assets/images/profile/no-profile-photo.png)
bioengineering
neural interfaces
epilepsy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
31
0.861
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Amol Raheja](https://cdn.adscientificindex.com/pictures/35/1682364.jpg)
Skull base and vascular neurosurgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
25
0.833
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Jay Spampanato](https://cdn.adscientificindex.com/pictures/1d/1681749.jpg)
Neuroscience
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
15
0.882
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total i10 IndexRankings
Ranking Based On Selection: 11
![Guilherme J Agnoletto](https://cdn.adscientificindex.com/pictures/98/5473052.jpg)
Neurosurgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
7
0.778
* Total i10 IndexRankings
Ranking Based On Selection: 12
![Michael T Bounajem](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 13
![David Botros](https://cdn.adscientificindex.com/pictures/a4/5616663.jpg)
Neurosurgery
Patient Outcomes
Neurosurgical Oncology
Neuro-Oncology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Christina A Rossi](https://cdn.adscientificindex.com/pictures/48/1682145.jpg)
Hippocampal Electrophysiology
Learning & Memory
Cognitive Disorders
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600
W Couldwell
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
366
195
0.533
John Kestle
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
156
114
0.731
Michael Karsy
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
100
89
0.890
Ramesh Grandhi
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
93
82
0.882
Vijay Ravindra
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
48
0.842
Mark A Mahan
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
43
0.796
Neurosurgery
Peripheral Nerve
Spine
Marcus D Mazur
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
30
0.698
Tyler S Davis
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
31
0.861
bioengineering
neural interfaces
epilepsy
Amol Raheja
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
25
0.833
Skull base and vascular neurosurgery
Jay Spampanato
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
15
0.882
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Guilherme J Agnoletto
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
7
0.778
Michael T Bounajem
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
David Botros
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
Neurosurgery
Patient Outcomes
Neurosurgical Oncology
Neuro-Oncology
Christina A Rossi
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600
Hippocampal Electrophysiology
Learning & Memory
Cognitive Disorders