Total 2,424,675 scientists, country 221, and institutions 24,468 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
![Christopher Still](/user/assets/images/profile/no-profile-photo.png)
Obesity
Bariatric Surgery
Fatty Liver Disease
Resolution of Diabetes
Predictors of Weight Loss
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
142
113
0.796
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Peter Benotti Md](/user/assets/images/profile/no-profile-photo.png)
Bariatric Surgery Outcomes
Obesity and Adipose Tissue Biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
104
48
0.462
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Sarah Hayek](/user/assets/images/profile/no-profile-photo.png)
Medicine
Surgery
Education
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Charles Walker](/user/assets/images/profile/no-profile-photo.png)
Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
Christopher Still
Geisinger Health System
Danville, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
142
113
0.796
Obesity
Bariatric Surgery
Fatty Liver Disease
Resolution of Diabetes
Predictors of Weight Loss
Peter Benotti Md
Geisinger Health System
Danville, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
104
48
0.462
Bariatric Surgery Outcomes
Obesity and Adipose Tissue Biology
Sarah Hayek
Geisinger Health System
Danville, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
Medicine
Surgery
Education
Charles Walker
Geisinger Health System
Danville, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667