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: 26
![gustav steinhoff](https://cdn.adscientificindex.com/pictures/80/1786715.jpg)
regenerative medicine
stem cell therapy
tissue engineering
cardiovascular disease
nanotechnology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
205
80
0.390
* Total i10 IndexRankings
Ranking Based On Selection: 27
![Steven Niederer](https://cdn.adscientificindex.com/pictures/3d/1158307.jpg)
Cardiac
Modelling
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
202
173
0.856
* Total i10 IndexRankings
Ranking Based On Selection: 28
![Torsten Doenst](https://cdn.adscientificindex.com/pictures/de/4431803.jpg)
cardiac surgery
cardiovascular physiology
cardiovascular medicine
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
201
136
0.677
* Total i10 IndexRankings
Ranking Based On Selection: 29
![Massimo Caputo](/user/assets/images/profile/no-profile-photo.png)
Cardiac Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
199
129
0.648
* Total i10 IndexRankings
Ranking Based On Selection: 30
![Vikas Sharma](https://cdn.adscientificindex.com/pictures/7a/5726024.jpg)
M&E
Govt & Public Sector
Civil Engineering
Construction Technology and Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
196
69
0.352
* Total i10 IndexRankings
Ranking Based On Selection: 31
![Richard Whitlock](https://cdn.adscientificindex.com/pictures/82/4524585.jpg)
Cardiac Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
194
161
0.830
* Total i10 IndexRankings
Ranking Based On Selection: 32
![Evgenij V. Potapov](https://cdn.adscientificindex.com/pictures/7d/4618538.jpg)
cardio-thoracic surgery
mechanical circulatory support
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
184
120
0.652
* Total i10 IndexRankings
Ranking Based On Selection: 33
![Stewart R Walsh](/user/assets/images/profile/no-profile-photo.png)
Vascular surgery
clinical trials
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
180
120
0.667
* Total i10 IndexRankings
Ranking Based On Selection: 34
![Matt Bown](/user/assets/images/profile/no-profile-photo.png)
Vascular surgery
aortic aneurysm
peripheral arterial disease
genomics
screening
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
138
0.771
* Total i10 IndexRankings
Ranking Based On Selection: 35
![Annie Laurie Shroyer](https://cdn.adscientificindex.com/pictures/83/1671836.jpg)
cardiac surgery
cardiology
health services research
systematic reviews of jet poteratir
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
108
0.603
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: 36
![Christos D Liapis](https://cdn.adscientificindex.com/pictures/3a/1839999.jpg)
Vascular Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
98
0.547
* Total i10 IndexRankings
Ranking Based On Selection: 37
![Ronald Dalman](https://cdn.adscientificindex.com/pictures/f5/1650268.jpg)
vascular surgery
vascular biology
medical education
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
176
121
0.688
* Total i10 IndexRankings
Ranking Based On Selection: 38
![Mitsumasa Hata](https://cdn.adscientificindex.com/pictures/23/409888.jpg)
Aortic Surgery
Cardiovascular Surgery
Atheroscrelosis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
173
37
0.214
* Total i10 IndexRankings
Ranking Based On Selection: 39
![George Tellides](/user/assets/images/profile/no-profile-photo.png)
Cardiac Surgery
Vascular Biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
171
127
0.743
* Total i10 IndexRankings
Ranking Based On Selection: 40
![Athanasios Giannoukas](https://cdn.adscientificindex.com/pictures/ea/1839376.jpg)
Vascular Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
169
104
0.615
* Total i10 IndexRankings
Ranking Based On Selection: 41
![Germano Melissano](https://cdn.adscientificindex.com/pictures/39/4690395.jpg)
Vascular Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
167
91
0.545
* Total i10 IndexRankings
Ranking Based On Selection: 42
![Matthias Thielmann](/user/assets/images/profile/no-profile-photo.png)
Cardiac Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
165
111
0.673
* Total i10 IndexRankings
Ranking Based On Selection: 43
![Bryan Whitson](https://cdn.adscientificindex.com/pictures/97/892286.jpg)
Cardiac
Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
164
113
0.689
* Total i10 IndexRankings
Ranking Based On Selection: 44
![Nikolaos Tsilimparis](https://cdn.adscientificindex.com/pictures/33/1761818.jpg)
Vascular and Endovascular Surgery
Aortic aneurismal disease
Aortic surgery
Carotid artery disease
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
161
144
0.894
* Total i10 IndexRankings
Ranking Based On Selection: 45
![Sedigheh Asgary](https://cdn.adscientificindex.com/pictures/ff/411595.jpg)
Cardiovascular
herbal medicine
Atherosclerosis
pharmaceutical
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
161
97
0.602
* Total i10 IndexRankings
Ranking Based On Selection: 46
![Stavros Kakkos](https://cdn.adscientificindex.com/pictures/5b/5274934.jpg)
Vascular Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
158
112
0.709
* Total i10 IndexRankings
Ranking Based On Selection: 47
![Joseph Shalhoub](https://cdn.adscientificindex.com/pictures/bb/1546946.jpg)
Vascular Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
154
131
0.851
* Total i10 IndexRankings
Ranking Based On Selection: 48
![Giovanni Mariscalco](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
149
107
0.718
* Total i10 IndexRankings
Ranking Based On Selection: 49
![Paul WM Fedak](https://cdn.adscientificindex.com/pictures/a5/643110.jpg)
Cardiac Surgery
Bicuspid Aortopathy
Biomaterials
Cardiac Fibroblasts
Extracellular Matrix
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
149
104
0.698
* Total i10 IndexRankings
Ranking Based On Selection: 50
![Ibrahim Sultan](https://cdn.adscientificindex.com/pictures/1b/4702213.jpg)
Cardiac Surgery
Aorta
Valve surgery and repair
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
147
144
0.980
gustav steinhoff
Universität Rostock
Rostock, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
205
80
0.390
regenerative medicine
stem cell therapy
tissue engineering
cardiovascular disease
nanotechnology
Steven Niederer
King's College London
London, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
202
173
0.856
Torsten Doenst
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
201
136
0.677
cardiac surgery
cardiovascular physiology
cardiovascular medicine
Massimo Caputo
University of Bristol
Bristol, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
199
129
0.648
Vikas Sharma
University of Utah
Salt Lake City, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
196
69
0.352
M&E
Govt & Public Sector
Civil Engineering
Construction Technology and Management
Richard Whitlock
McMaster University
Hamilton, Canada
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
194
161
0.830
Evgenij V. Potapov
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
184
120
0.652
cardio-thoracic surgery
mechanical circulatory support
Stewart R Walsh
University of Galway
Galway, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
180
120
0.667
Vascular surgery
clinical trials
Matt Bown
University of Leicester
Leicester, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
138
0.771
Vascular surgery
aortic aneurysm
peripheral arterial disease
genomics
screening
Annie Laurie Shroyer
Stony Brook Medicine
Stony Brook, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
108
0.603
cardiac surgery
cardiology
health services research
systematic reviews of jet poteratir
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!
Christos D Liapis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
98
0.547
Ronald Dalman
Stanford University
Stanford, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
176
121
0.688
vascular surgery
vascular biology
medical education
Mitsumasa Hata
Nihon University
Tokyo, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
173
37
0.214
Aortic Surgery
Cardiovascular Surgery
Atheroscrelosis
George Tellides
Yale University
New Haven, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
171
127
0.743
Cardiac Surgery
Vascular Biology
Athanasios Giannoukas
University of Thessaly
Volos, Greece
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
169
104
0.615
Germano Melissano
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
167
91
0.545
Matthias Thielmann
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
165
111
0.673
Bryan Whitson
Ohio State University
Columbus, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
164
113
0.689
Nikolaos Tsilimparis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
161
144
0.894
Vascular and Endovascular Surgery
Aortic aneurismal disease
Aortic surgery
Carotid artery disease
Sedigheh Asgary
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
161
97
0.602
Cardiovascular
herbal medicine
Atherosclerosis
pharmaceutical
Stavros Kakkos
University of Patras
Patras, Greece
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
158
112
0.709
Joseph Shalhoub
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
154
131
0.851
Giovanni Mariscalco
University of Leicester
Leicester, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
149
107
0.718
Paul WM Fedak
University of Calgary
Calgary, Canada
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
149
104
0.698
Cardiac Surgery
Bicuspid Aortopathy
Biomaterials
Cardiac Fibroblasts
Extracellular Matrix
Ibrahim Sultan
University of Pittsburgh
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
147
144
0.980
Cardiac Surgery
Aorta
Valve surgery and repair