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.

* Rankings
Ranking Based On Selection :5
John Colford
Epidemiology
Clinical Trials
Waterborne Diseases
Infectious Diseases
Metrics
H-Index
i10 Index
Citation
78
182
28,420
Rachel Morello Frosch
environmental health
environmental justice
children's health
epidemiology
health social movements
Metrics
H-Index
i10 Index
Citation
68
171
17,614
* Rankings
Ranking Based On Selection :13
Mahasin Mujahid
health inequities
cardiovascular risk
maternal health
neighborhoods
structural factors
Metrics
H-Index
i10 Index
Citation
56
110
13,622
* Rankings
Ranking Based On Selection :14
Emily J Ozer
Youth development
resilience
psychology empowerment
PTSD
school-based interventions
Metrics
H-Index
i10 Index
Citation
50
83
14,831
* Rankings
Ranking Based On Selection :15
Neela Guha
Environmental/occupational epidemiology
cancer epidemiology
systematic review
meta-analysis
health policy
Metrics
H-Index
i10 Index
Citation
47
67
22,773
* Rankings
Ranking Based On Selection :17
Fenyong Liu
Public Health
Virology
Biochemistry
Microbiology
Infectious Diseases
Metrics
H-Index
i10 Index
Citation
45
117
7,813
* Rankings
Ranking Based On Selection :18
Joseph Lewnard
Epidemiology
Respiratory infections
Streptococcus pneumoniae
vaccines
transmission dynamics
Metrics
H-Index
i10 Index
Citation
38
78
7,206
* Rankings
Ranking Based On Selection :20
Karen Huen
children's environmental health
molecular epidemiology
epigenetics
Metrics
H-Index
i10 Index
Citation
38
60
5,219
* Rankings
Ranking Based On Selection :22
Susan Lee Ivey
Health and health care disparities
health care interventions
cardiovascular disease and diabetes risk and prevention
Asian Am
Metrics
H-Index
i10 Index
Citation
36
63
3,483
* Rankings
Ranking Based On Selection :25
Jade Benjamin-Chung
Epidemiology
Biostatistics
Infectious Diseases
Global Health
Planetary Health
Metrics
H-Index
i10 Index
Citation
29
42
4,382
* Rankings
Ranking Based On Selection :26
Brooke Rhead
Epidemiology
Genetics/Genomics
Computational Biology
Bioinformatics
Translational Medicine
Metrics
H-Index
i10 Index
Citation
29
37
9,626
Megha Lynne Mehrotra
HIV
Epidemiology and Biostatistics
Causal Inference
Transportability
COVID-19
Metrics
H-Index
i10 Index
Citation
18
25
2,214
Jaspal Sandhu
human-centered design
innovation for equity
emerging technologies for health
Metrics
H-Index
i10 Index
Citation
12
14
659
Rankings
Ranking Based On Selection: 1
Ronald E Dahl
Metrics
H-Index
i10 Index
Citation Counts
127
310
60,447
adolescence
affective neuroscience
emotion
motivation
sleep
Rankings
Ranking Based On Selection: 3
Smith AH
Metrics
H-Index
i10 Index
Citation Counts
101
265
35,576
Rankings
Ranking Based On Selection: 4
Ira Tager
Metrics
H-Index
i10 Index
Citation Counts
90
199
24,902
Rankings
Ranking Based On Selection: 5
John Colford
Metrics
H-Index
i10 Index
Citation Counts
78
182
28,420
Epidemiology
Clinical Trials
Waterborne Diseases
Infectious Diseases
Rankings
Ranking Based On Selection: 6
S Leonard Syme
Metrics
H-Index
i10 Index
Citation Counts
74
146
44,596
Rankings
Ranking Based On Selection: 8
Rachel Morello Frosch
Metrics
H-Index
i10 Index
Citation Counts
68
171
17,614
environmental health
environmental justice
children's health
epidemiology
health social movements
Rankings
Ranking Based On Selection: 9
Lia Ch Fernald
Metrics
H-Index
i10 Index
Citation Counts
64
154
20,355
Rankings
Ranking Based On Selection: 10
Ralph Catalano
Metrics
H-Index
i10 Index
Citation Counts
61
165
15,503
Rankings
Ranking Based On Selection: 11
Jennifer Ahern
Metrics
H-Index
i10 Index
Citation Counts
59
127
17,841
Rankings
Ranking Based On Selection: 12
Lonnie R Snowden
Metrics
H-Index
i10 Index
Citation Counts
57
154
14,226
Rankings
Ranking Based On Selection: 13
Mahasin Mujahid
Metrics
H-Index
i10 Index
Citation Counts
56
110
13,622
health inequities
cardiovascular risk
maternal health
neighborhoods
structural factors
Rankings
Ranking Based On Selection: 14
Emily J Ozer
Metrics
H-Index
i10 Index
Citation Counts
50
83
14,831
Youth development
resilience
psychology empowerment
PTSD
school-based interventions
Rankings
Ranking Based On Selection: 15
Neela Guha
Metrics
H-Index
i10 Index
Citation Counts
47
67
22,773
Environmental/occupational epidemiology
cancer epidemiology
systematic review
meta-analysis
health policy
Rankings
Ranking Based On Selection: 16
Julianna Deardorff
Metrics
H-Index
i10 Index
Citation Counts
46
101
7,401
Rankings
Ranking Based On Selection: 17
Fenyong Liu
Metrics
H-Index
i10 Index
Citation Counts
45
117
7,813
Public Health
Virology
Biochemistry
Microbiology
Infectious Diseases
Rankings
Ranking Based On Selection: 18
Joseph Lewnard
Metrics
H-Index
i10 Index
Citation Counts
38
78
7,206
Epidemiology
Respiratory infections
Streptococcus pneumoniae
vaccines
transmission dynamics
Rankings
Ranking Based On Selection: 20
Karen Huen
Metrics
H-Index
i10 Index
Citation Counts
38
60
5,219
children's environmental health
molecular epidemiology
epigenetics
Rankings
Ranking Based On Selection: 21
Ana Maria Mora
Metrics
H-Index
i10 Index
Citation Counts
36
60
3,179
Rankings
Ranking Based On Selection: 22
Susan Lee Ivey
Metrics
H-Index
i10 Index
Citation Counts
36
63
3,483
Health and health care disparities
health care interventions
cardiovascular disease and diabetes risk and prevention
Asian Am
Rankings
Ranking Based On Selection: 23
Sarah Stanley
Metrics
H-Index
i10 Index
Citation Counts
35
47
5,347
Rankings
Ranking Based On Selection: 25
Jade Benjamin-Chung
Metrics
H-Index
i10 Index
Citation Counts
29
42
4,382
Epidemiology
Biostatistics
Infectious Diseases
Global Health
Planetary Health
Rankings
Ranking Based On Selection: 26
Brooke Rhead
Metrics
H-Index
i10 Index
Citation Counts
29
37
9,626
Epidemiology
Genetics/Genomics
Computational Biology
Bioinformatics
Translational Medicine
Rankings
Ranking Based On Selection: 27
Jennifer C Hunter
Metrics
H-Index
i10 Index
Citation Counts
21
26
3,375
Rankings
Ranking Based On Selection: 28
Hannah Thompson
Metrics
H-Index
i10 Index
Citation Counts
20
32
1,907
Rankings
Ranking Based On Selection: 29
Daniela Michlmayr
Metrics
H-Index
i10 Index
Citation Counts
19
25
2,423
Rankings
Ranking Based On Selection: 30
Karl Pope
Metrics
H-Index
i10 Index
Citation Counts
19
23
2,018
Rankings
Ranking Based On Selection: 32
Andrew Mertens
Metrics
H-Index
i10 Index
Citation Counts
18
29
2,336
global health
child nutrition
causal inference
machine learning
Rankings
Ranking Based On Selection: 33
Megha Lynne Mehrotra
Metrics
H-Index
i10 Index
Citation Counts
18
25
2,214
HIV
Epidemiology and Biostatistics
Causal Inference
Transportability
COVID-19
Rankings
Ranking Based On Selection: 34
Lauren Goldstein
Metrics
H-Index
i10 Index
Citation Counts
18
20
1,839
Rankings
Ranking Based On Selection: 35
Magelda Montoya Cruz
Metrics
H-Index
i10 Index
Citation Counts
17
21
1,706
Rankings
Ranking Based On Selection: 37
Monika Izano
Metrics
H-Index
i10 Index
Citation Counts
15
17
775
Rankings
Ranking Based On Selection: 40
Jaspal Sandhu
Metrics
H-Index
i10 Index
Citation Counts
12
14
659
human-centered design
innovation for equity
emerging technologies for health
Rankings
Ranking Based On Selection: 42
David Holstius
Metrics
H-Index
i10 Index
Citation Counts
8
8
1,123
Rankings
Ranking Based On Selection: 43
Lyndsay Miles
Metrics
H-Index
i10 Index
Citation Counts
8
7
503