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
![Nicholas Zyromski](https://cdn.adscientificindex.com/pictures/5d/1389160.jpg)
pancreatic surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
141
107
0.759
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Eugene P Ceppa](/user/assets/images/profile/no-profile-photo.png)
HPB Surgery
Pancreatitis
Pancreatic Adenocarcinoma
Surgical Quality
Surgical Education
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
90
76
0.844
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Ping Li](/user/assets/images/profile/no-profile-photo.png)
Transplant Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
33
0.805
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Krishna C Vemulapalli](https://cdn.adscientificindex.com/pictures/73/1389118.jpg)
Colonoscopy
Colorectal cancer
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
26
0.929
* Total i10 IndexRankings
Ranking Based On Selection: 5
![James R Butler](https://cdn.adscientificindex.com/pictures/84/1389091.jpg)
Surgery
Transplant
Genetics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
20
0.909
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Ambar Banerjee](https://cdn.adscientificindex.com/pictures/7a/1344911.jpg)
bariatric surgery
GERD
Hernia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
16
0.889
Nicholas Zyromski
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
141
107
0.759
Eugene P Ceppa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
90
76
0.844
HPB Surgery
Pancreatitis
Pancreatic Adenocarcinoma
Surgical Quality
Surgical Education
Ping Li
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
33
0.805
Krishna C Vemulapalli
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
26
0.929
Colonoscopy
Colorectal cancer
James R Butler
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
20
0.909
Surgery
Transplant
Genetics
Ambar Banerjee
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
16
0.889
bariatric surgery
GERD
Hernia