Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (873,864 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

Lloyd Ratner
Transplantation
Surgery
Immunology
Health Care Policy
Education
Metrics
H-Index
i10 Index
Citation
72
188
21,459
Tomoaki Kato
Transplantation
Surgery
Immunology
Liver cancer
Cholangiocarcinoma
Metrics
H-Index
i10 Index
Citation
62
241
14,732
Deborah S Keller
Colorectal Surgery
Enhanced Recovery After Surgery
Minimally Invasive Surgery
Metrics
H-Index
i10 Index
Citation
47
157
12,166
* Rankings
Ranking Based On Selection :12
Giovanni Ferrari
Cardiovascular Biology
Heart Valves
Biomaterials
CT Surgery
Metrics
H-Index
i10 Index
Citation
39
73
4,483
* Rankings
Ranking Based On Selection :14
Adam Griesemer
tolerance
liver transplantation
living donor transplantation
Metrics
H-Index
i10 Index
Citation
36
69
5,500
* Rankings
Ranking Based On Selection :15
Louis Ragolia
Cardiovascular Disease
Diabetes
Obesity
Bariatric surgery
STEM
Metrics
H-Index
i10 Index
Citation
32
62
3,382
June K Wu
vascular biology
vascular anomalies
translational research
Metrics
H-Index
i10 Index
Citation
29
41
2,672
Greg D Sacks
Surgery
Healthcare Quality
Medical Decision-Making
Metrics
H-Index
i10 Index
Citation
23
30
2,010
Paritosh Suman
Endocrine Oncology
Endocrine Surgery
Cancer Biomarker and Molecular Pathway Research
Metrics
H-Index
i10 Index
Citation
12
15
3,268
Rauf Shahbazov
Organ transplantation
Robotic surgery
General surgery
Research basic and clinical medicine
Metrics
H-Index
i10 Index
Citation
10
11
509
David Morrell
Abdominal wall reconstruction
Minimally invasive surgery
Endoscopic surgery
Metrics
H-Index
i10 Index
Citation
8
8
250
Rankings
Ranking Based On Selection: 1
Christopher L Wolfgang
Metrics
H-Index
i10 Index
Citation Counts
128
509
79,689
Rankings
Ranking Based On Selection: 2
Robert Montgomery
Metrics
H-Index
i10 Index
Citation Counts
103
301
36,543
Rankings
Ranking Based On Selection: 3
Feza Remzi
Metrics
H-Index
i10 Index
Citation Counts
90
326
28,364
Rankings
Ranking Based On Selection: 4
Rainer W Gruessner
Metrics
H-Index
i10 Index
Citation Counts
79
297
22,359
Rankings
Ranking Based On Selection: 5
Lloyd Ratner
Metrics
H-Index
i10 Index
Citation Counts
72
188
21,459
Transplantation
Surgery
Immunology
Health Care Policy
Education
Rankings
Ranking Based On Selection: 6
Tomoaki Kato
Metrics
H-Index
i10 Index
Citation Counts
62
241
14,732
Transplantation
Surgery
Immunology
Liver cancer
Cholangiocarcinoma
Rankings
Ranking Based On Selection: 7
Paul Kurlansky
Metrics
H-Index
i10 Index
Citation Counts
48
159
11,049
Rankings
Ranking Based On Selection: 8
Deborah S Keller
Metrics
H-Index
i10 Index
Citation Counts
47
157
12,166
Colorectal Surgery
Enhanced Recovery After Surgery
Minimally Invasive Surgery
Rankings
Ranking Based On Selection: 9
John Allendorf
Metrics
H-Index
i10 Index
Citation Counts
47
83
6,810
Rankings
Ranking Based On Selection: 10
Patrizio Petrone
Metrics
H-Index
i10 Index
Citation Counts
45
114
7,913
Rankings
Ranking Based On Selection: 11
George Ferzli
Metrics
H-Index
i10 Index
Citation Counts
44
93
8,051
Rankings
Ranking Based On Selection: 12
Giovanni Ferrari
Metrics
H-Index
i10 Index
Citation Counts
39
73
4,483
Cardiovascular Biology
Heart Valves
Biomaterials
CT Surgery
Rankings
Ranking Based On Selection: 13
Guirong Wang
Metrics
H-Index
i10 Index
Citation Counts
39
81
4,490
lung injury and innate immunity
surfactant proteins
Rankings
Ranking Based On Selection: 14
Adam Griesemer
Metrics
H-Index
i10 Index
Citation Counts
36
69
5,500
tolerance
liver transplantation
living donor transplantation
Rankings
Ranking Based On Selection: 15
Louis Ragolia
Metrics
H-Index
i10 Index
Citation Counts
32
62
3,382
Cardiovascular Disease
Diabetes
Obesity
Bariatric surgery
STEM
Rankings
Ranking Based On Selection: 16
Bardiya Zangbar
Metrics
H-Index
i10 Index
Citation Counts
31
46
2,865
Trauma Surgery
Frailty
Traumatic Brain Injury
Telemedicine
Rankings
Ranking Based On Selection: 17
June K Wu
Metrics
H-Index
i10 Index
Citation Counts
29
41
2,672
vascular biology
vascular anomalies
translational research
Rankings
Ranking Based On Selection: 18
Rankings
Ranking Based On Selection: 19
Camilo Correa-Gallego
Metrics
H-Index
i10 Index
Citation Counts
24
33
3,167
Rankings
Ranking Based On Selection: 20
Greg D Sacks
Metrics
H-Index
i10 Index
Citation Counts
23
30
2,010
Surgery
Healthcare Quality
Medical Decision-Making
Rankings
Ranking Based On Selection: 21
Patricio Bernardo Lynn
Metrics
H-Index
i10 Index
Citation Counts
17
26
2,793
Rankings
Ranking Based On Selection: 22
Ankita Srivastava
Metrics
H-Index
i10 Index
Citation Counts
16
19
568
Rankings
Ranking Based On Selection: 23
Joshua Leinwand
Metrics
H-Index
i10 Index
Citation Counts
16
18
3,238
Rankings
Ranking Based On Selection: 24
Bruce Gelb
Metrics
H-Index
i10 Index
Citation Counts
15
19
870
Rankings
Ranking Based On Selection: 25
Patricia Ayoung-Chee
Metrics
H-Index
i10 Index
Citation Counts
15
17
1,459
Rankings
Ranking Based On Selection: 26
Despoina Daskalaki
Metrics
H-Index
i10 Index
Citation Counts
14
16
1,229
Rankings
Ranking Based On Selection: 27
Rankings
Ranking Based On Selection: 28
Paritosh Suman
Metrics
H-Index
i10 Index
Citation Counts
12
15
3,268
Endocrine Oncology
Endocrine Surgery
Cancer Biomarker and Molecular Pathway Research
Rankings
Ranking Based On Selection: 29
Charlisa Gibson
Metrics
H-Index
i10 Index
Citation Counts
11
11
1,354
Obesity
Gut Hormones and Bariatric Surgery
Neuroimaging
Rankings
Ranking Based On Selection: 30
Rauf Shahbazov
Metrics
H-Index
i10 Index
Citation Counts
10
11
509
Organ transplantation
Robotic surgery
General surgery
Research basic and clinical medicine
Rankings
Ranking Based On Selection: 31
Rae S Rokosh
Metrics
H-Index
i10 Index
Citation Counts
10
10
558
Rankings
Ranking Based On Selection: 32
Arman Alberto Sorin Shadaloey
Metrics
H-Index
i10 Index
Citation Counts
8
8
1,414
Cancer immunology
Mycobiome
Microbiome
General Surgery
Rankings
Ranking Based On Selection: 33
David Morrell
Metrics
H-Index
i10 Index
Citation Counts
8
8
250
Abdominal wall reconstruction
Minimally invasive surgery
Endoscopic surgery
Rankings
Ranking Based On Selection: 35
Anna Kundel
Metrics
H-Index
i10 Index
Citation Counts
7
7
405
Rankings
Ranking Based On Selection: 36
Tejas S Sathe
Metrics
H-Index
i10 Index
Citation Counts
5
2
150
Rankings
Ranking Based On Selection: 37
Alexey Abramov
Metrics
H-Index
i10 Index
Citation Counts
4
2
76
Rankings
Ranking Based On Selection: 38
Mahmoudreza Moein
Metrics
H-Index
i10 Index
Citation Counts
4
2
58
Transplant Surgery
Transplant Nephrology
Nephropathology
Nephrology
Rankings
Ranking Based On Selection: 39