Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Total i10 IndexRankings
Ranking Based On Selection :1
hepatobiliary surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
590
345
0.585
* Total i10 IndexRankings
Ranking Based On Selection :2
Gastrointestinal Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
440
267
0.607
* Total i10 IndexRankings
Ranking Based On Selection :3
Hepato-biliary and Pancreatic Surgery
Liver Transplantation
Surgical Infection
Surgical Nutrition
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
427
204
0.478
* Total i10 IndexRankings
Ranking Based On Selection :4
Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
401
313
0.781
* Total i10 IndexRankings
Ranking Based On Selection :5
Gastric Cancer
Surgery
Comprehensive Treatment
stomach
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
326
268
0.822
* Total i10 IndexRankings
Ranking Based On Selection :6
surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
324
143
0.441
* Total i10 IndexRankings
Ranking Based On Selection :7
Colorectal cancer
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
318
224
0.704
* Total i10 IndexRankings
Ranking Based On Selection :8
gastric cancer
minimally invasive surgery
robotic surgery
translational research
clinical trial
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
317
220
0.694
* Total i10 IndexRankings
Ranking Based On Selection :9
HBP surgery
Surgical Oncology
Hepatocellular carcinoma
GI stromal tumour
Brachytherapy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
298
218
0.732
* Total i10 IndexRankings
Ranking Based On Selection :10
Liver transplantation
liver cancer
pancreatic cancer
bioethics of organ transplantation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
265
166
0.626
* Total i10 IndexRankings
Ranking Based On Selection :11
Esophageal and Upper Gastrointestinal Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
258
157
0.609
* Total i10 IndexRankings
Ranking Based On Selection :12
Gastric Cancer
Surgery
Oncology
Chemotherapy
Medical engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
252
172
0.683
* Total i10 IndexRankings
Ranking Based On Selection :13
Surgery
Clinical Oncology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
242
121
0.500
* Total i10 IndexRankings
Ranking Based On Selection :14
hepatic/pancreatic/biliary neoplasms
neuroendocrine tumors
GIST
liver and kidney transplant
laparoscopic & robotic surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
233
197
0.845
* Total i10 IndexRankings
Ranking Based On Selection :15
Surgery
Gastric Cancer
GIST
Nutrition
Endocrine Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
233
150
0.644
* Total i10 IndexRankings
Ranking Based On Selection :16
Surgery
Medical Education
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
216
132
0.611
* Total i10 IndexRankings
Ranking Based On Selection :17
Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
203
106
0.522
* Total i10 IndexRankings
Ranking Based On Selection :18
Hepato-biliary-pancreas surgery
Clinical oncology
Photodynamic therapy
surgical education
DX
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
197
77
0.391
* Total i10 IndexRankings
Ranking Based On Selection :19
gastric cancer
esophageal cancer
morbid obesity
achalasia
advanced endoscopy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
136
0.760
* Total i10 IndexRankings
Ranking Based On Selection :20
Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
126
0.704
* Total i10 IndexRankings
Ranking Based On Selection :21
surgery
hepatobiliary surgery
liver
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
173
67
0.387
* Total i10 IndexRankings
Ranking Based On Selection :22
surgery
oncology
pathology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
168
138
0.821
* Total i10 IndexRankings
Ranking Based On Selection :23
Pancreatobiliary surgery
pancreatic cancer
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
167
133
0.796
* Total i10 IndexRankings
Ranking Based On Selection :24
Hepatocellular carcinoma
liver transplantation
pancreatic surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
161
139
0.863
* Total i10 IndexRankings
Ranking Based On Selection :25
disaster medicine
surgery
human security
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
161
105
0.652
Lau WY
Chinese University of Hong Kong
Central Ave, Hong Kong
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
590
345
0.585
Yoshihiro Kakeji
Kobe University
Kobe, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
440
267
0.607
Gastrointestinal Surgery
Katsuhiko Yanaga
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
427
204
0.478
Hepato-biliary and Pancreatic Surgery
Liver Transplantation
Surgical Infection
Surgical Nutrition
Michiaki Unno
Tohoku University
Sendai, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
401
313
0.781
Jiafu Ji
Peking University
Beijing, China
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
326
268
0.822
Gastric Cancer
Surgery
Comprehensive Treatment
stomach
関本貢嗣
Kansai Medical University
Moriguchi, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
324
143
0.441
Nam Kyu Kim
Yonsei University
Seoul, South Korea
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
318
224
0.704
Yw Kim|YW Kim, Y.-W. Kim
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
317
220
0.694
gastric cancer
minimally invasive surgery
robotic surgery
translational research
clinical trial
Pierce Kah Hoe, Chow
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
298
218
0.732
HBP surgery
Surgical Oncology
Hepatocellular carcinoma
GI stromal tumour
Brachytherapy
See Ching Chan
University of Hong Kong
Pok Fu Lam, Hong Kong
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
265
166
0.626
Liver transplantation
liver cancer
pancreatic cancer
bioethics of organ transplantation
Simon Law
University of Hong Kong
Pok Fu Lam, Hong Kong
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
258
157
0.609
Esophageal and Upper Gastrointestinal Surgery
Yoshikawa Takaki, 吉川貴己
National Cancer Center
Tokyo, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
252
172
0.683
Gastric Cancer
Surgery
Oncology
Chemotherapy
Medical engineering
Hideaki Shimada
Toho University
Tokyo, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
242
121
0.500
Surgery
Clinical Oncology
Brian Kp Goh
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
233
197
0.845
hepatic/pancreatic/biliary neoplasms
neuroendocrine tumors
GIST
liver and kidney transplant
laparoscopic & robotic surgery
Enders Kwok Wai Ng
Chinese University of Hong Kong
Central Ave, Hong Kong
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
233
150
0.644
Surgery
Gastric Cancer
GIST
Nutrition
Endocrine Surgery
Muhammad Farhan Khan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
216
132
0.611
Surgery
Medical Education
Shuji Isaji
Mie University
Tsu, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
203
106
0.522
Atsushi Nanashima
University of Miyazaki
Miyazaki, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
197
77
0.391
Hepato-biliary-pancreas surgery
Clinical oncology
Photodynamic therapy
surgical education
DX
Jimmy So Bok Yan
National University of Singapore
Queenstown, Singapore
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
136
0.760
gastric cancer
esophageal cancer
morbid obesity
achalasia
advanced endoscopy
London Lucien Ooi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
126
0.704
Akanand Singh
Chongqing Medical University
Chongqing, China
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
173
67
0.387
surgery
hepatobiliary surgery
liver
Tomoki Ebata
Nagoya University
Nagoya, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
168
138
0.821
surgery
oncology
pathology
Sohei Satoi
Kansai Medical University
Moriguchi, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
167
133
0.796
Pancreatobiliary surgery
pancreatic cancer
Albert Chan
University of Hong Kong
Pok Fu Lam, Hong Kong
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
161
139
0.863
Hepatocellular carcinoma
liver transplantation
pancreatic surgery
Shinichi Egawa
Tohoku University
Sendai, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
161
105
0.652
disaster medicine
surgery
human security