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
![Shivakumar Vignesh](https://cdn.adscientificindex.com/pictures/d4/1671228.jpg)
Gastroenterology
gastrointestinal oncology
pancreatic diseases
biliary diseases
Barrett’s esophagus
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
17
0.708
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Ritesh Kanotra](https://cdn.adscientificindex.com/pictures/16/4948940.jpg)
Gastroenterology
Cardiology
Hospitalist medicine
Internal medicine
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Nael Haddad](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Shivakumar Vignesh
Banner Health
Phoenix, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
17
0.708
Gastroenterology
gastrointestinal oncology
pancreatic diseases
biliary diseases
Barrett’s esophagus
Ritesh Kanotra
Banner Health
Phoenix, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
Gastroenterology
Cardiology
Hospitalist medicine
Internal medicine
Nael Haddad
Banner Health
Phoenix, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0