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 :1
John Breitner
Alzheimer's disease prevention
clinical trials
epidemiology
Metrics
H-Index
i10 Index
Citation
97
259
33,625
* Rankings
Ranking Based On Selection :2
Mallar Chakravarty
Mental Illness
mental health
neuroscience
brain imaging
neuroimaging
Metrics
H-Index
i10 Index
Citation
86
305
30,598
* Rankings
Ranking Based On Selection :5
Romina Mizrahi
https://www.mcgill.ca/romina-mizrahi-cats-lab/
Metrics
H-Index
i10 Index
Citation
60
121
11,501
* Rankings
Ranking Based On Selection :6
J Christopher Perry
psychiatry
psychotherapy
defense mechanisms
depression
personality disorders
Metrics
H-Index
i10 Index
Citation
60
158
16,886
* Rankings
Ranking Based On Selection :7
Suzanne King
Prenatal Maternal Stress
Stress
Schizophrenia
Metrics
H-Index
i10 Index
Citation
58
121
13,688
* Rankings
Ranking Based On Selection :8
Rob Whitley
Recovery
Stigma
Suicide Prevention
Men's Mental Health
Veteran Mental Health
Metrics
H-Index
i10 Index
Citation
57
135
12,606
* Rankings
Ranking Based On Selection :9
Gabriella Gobbi
Psychiatry
Neuroscience
Psychopharmacology
Metrics
H-Index
i10 Index
Citation
57
105
11,369
* Rankings
Ranking Based On Selection :11
Martin Lepage
neuroimaging
neuropsychology
schizophrenia
psychosis
CBT
Metrics
H-Index
i10 Index
Citation
56
187
13,737
* Rankings
Ranking Based On Selection :13
Lawrence Annable
Psychiatry
Clinical Trials
Epidemiology
Research Ethics
Metrics
H-Index
i10 Index
Citation
44
95
7,985
* Rankings
Ranking Based On Selection :14
Patricia Pelufo Silveira
Medicine
Neuroscience
Pediatrics
Psychiatry
Nutrition
Metrics
H-Index
i10 Index
Citation
43
113
5,648
* Rankings
Ranking Based On Selection :16
Srividya N Iyer
youth mental health
global mental health
early intervention for psychosis
cultural psychiatry
Metrics
H-Index
i10 Index
Citation
41
114
5,532
* Rankings
Ranking Based On Selection :17
Maria Natasha Rajah
Cognitive Neuroscience
Aging
Sex Differences
Episodic Memory
Dementia Risk
Metrics
H-Index
i10 Index
Citation
41
78
6,835
* Rankings
Ranking Based On Selection :18
Cristiana Cruceanu
Stress
Psychiatry
Neurodevelopment
Molecular and Cellular Biology
Metrics
H-Index
i10 Index
Citation
39
63
9,621
* Rankings
Ranking Based On Selection :19
Howard Margolese
Psychopharmacology
First- Episode Psychosis
Schizophrenia
Metrics
H-Index
i10 Index
Citation
33
56
3,856
* Rankings
Ranking Based On Selection :20
Soham Rej
Geriatric Mood Disorders
Lithium
Mindfulness/Meditation
Clinical Trials
Pharmaco-epidemiology
Metrics
H-Index
i10 Index
Citation
31
82
4,812
* Rankings
Ranking Based On Selection :21
Danielle Groleau
Cultural psychiatry
breastfeeding
female genital mutilation
qualitative methods
narrative
Metrics
H-Index
i10 Index
Citation
30
41
4,014
* Rankings
Ranking Based On Selection :22
Jacques Tremblay
Clinical Epidemiology
Psychiatry
Dual Disorders
PTSD
Metrics
H-Index
i10 Index
Citation
30
62
4,469
* Rankings
Ranking Based On Selection :23
Danilo De Gregorio
neuroscience
psychopharmacology
mood disorders
anxiety
neuropathic pain
Metrics
H-Index
i10 Index
Citation
27
34
2,844
* Rankings
Ranking Based On Selection :24
David Wright
History of Medicine
history of psychiatry
history of disability
Canadian history
Metrics
H-Index
i10 Index
Citation
26
37
2,288
J Bruno Debruille
Cognition
social
consciousness
electrical brain dynamics
ERPs
Metrics
H-Index
i10 Index
Citation
24
33
1,880
Michael Lifshitz
meditation
psychedelics
neuroplasticity
imagination
agency
Metrics
H-Index
i10 Index
Citation
23
32
3,012
Ovidiu Tatar
addiction psychiatry
e-Mental health
psychosocial factors and preventive health behaviors
human papillomavirus vaccination
c
Metrics
H-Index
i10 Index
Citation
18
21
1,321
Rachel A Rabin
Psychiatric disorders
Addictions
Cognition
Treatment
Metrics
H-Index
i10 Index
Citation
17
27
1,187
Kyle Greenway
Psychiatry
psychedelics
clinical research
Metrics
H-Index
i10 Index
Citation
12
13
492
Anouar Khayachi
Neurosciences
Psychiatry
cell biology
synapse
Metrics
H-Index
i10 Index
Citation
11
12
456
Nicole D Souza
global mental health
transcultural psychiatry
violence and war trauma
adolescent mental health
Metrics
H-Index
i10 Index
Citation
9
8
470
Arian Behzadi
Psychiatry
Neuropsychiatry
Addiction studies
Metrics
H-Index
i10 Index
Citation
9
9
640
Minh P. Lam
psychiatry
neuroscience
neurology
pharmacology
AI
Metrics
H-Index
i10 Index
Citation
7
6
479
Claire Adams
psychology
psychiatry
public health
behaviour change
patient engagement
Metrics
H-Index
i10 Index
Citation
7
6
302
Christina L. Klassen
migration
refugees
mental health
cultural psychology
cultural psychiatry
Metrics
H-Index
i10 Index
Citation
4
4
124
Sarah Hanafi
Psychiatry
Medical Education
Neuropsychiatry
Health Policy
Transcultural Psychiatry
Metrics
H-Index
i10 Index
Citation
3
1
86
Rankings
Ranking Based On Selection: 1
John Breitner
Metrics
H-Index
i10 Index
Citation Counts
97
259
33,625
Alzheimer's disease prevention
clinical trials
epidemiology
Rankings
Ranking Based On Selection: 2
Mallar Chakravarty
Metrics
H-Index
i10 Index
Citation Counts
86
305
30,598
Mental Illness
mental health
neuroscience
brain imaging
neuroimaging
Rankings
Ranking Based On Selection: 3
Simon N Young
Metrics
H-Index
i10 Index
Citation Counts
75
221
20,165
Rankings
Ranking Based On Selection: 4
Naguib Mechawar
Metrics
H-Index
i10 Index
Citation Counts
65
138
14,697
Rankings
Ranking Based On Selection: 5
Romina Mizrahi
Metrics
H-Index
i10 Index
Citation Counts
60
121
11,501
https://www.mcgill.ca/romina-mizrahi-cats-lab/
Rankings
Ranking Based On Selection: 6
J Christopher Perry
Metrics
H-Index
i10 Index
Citation Counts
60
158
16,886
psychiatry
psychotherapy
defense mechanisms
depression
personality disorders
Rankings
Ranking Based On Selection: 7
Suzanne King
Metrics
H-Index
i10 Index
Citation Counts
58
121
13,688
Rankings
Ranking Based On Selection: 8
Rob Whitley
Metrics
H-Index
i10 Index
Citation Counts
57
135
12,606
Recovery
Stigma
Suicide Prevention
Men's Mental Health
Veteran Mental Health
Rankings
Ranking Based On Selection: 9
Gabriella Gobbi
Metrics
H-Index
i10 Index
Citation Counts
57
105
11,369
Rankings
Ranking Based On Selection: 10
Howard Steiger
Metrics
H-Index
i10 Index
Citation Counts
57
140
9,780
Rankings
Ranking Based On Selection: 11
Martin Lepage
Metrics
H-Index
i10 Index
Citation Counts
56
187
13,737
neuroimaging
neuropsychology
schizophrenia
psychosis
CBT
Rankings
Ranking Based On Selection: 12
Christina Gianoulakis
Metrics
H-Index
i10 Index
Citation Counts
50
80
7,217
Rankings
Ranking Based On Selection: 13
Lawrence Annable
Metrics
H-Index
i10 Index
Citation Counts
44
95
7,985
Psychiatry
Clinical Trials
Epidemiology
Research Ethics
Rankings
Ranking Based On Selection: 14
Patricia Pelufo Silveira
Metrics
H-Index
i10 Index
Citation Counts
43
113
5,648
Medicine
Neuroscience
Pediatrics
Psychiatry
Nutrition
Rankings
Ranking Based On Selection: 15
Natalie Grizenko
Metrics
H-Index
i10 Index
Citation Counts
42
73
4,964
Rankings
Ranking Based On Selection: 16
Srividya N Iyer
Metrics
H-Index
i10 Index
Citation Counts
41
114
5,532
youth mental health
global mental health
early intervention for psychosis
cultural psychiatry
Rankings
Ranking Based On Selection: 17
Maria Natasha Rajah
Metrics
H-Index
i10 Index
Citation Counts
41
78
6,835
Cognitive Neuroscience
Aging
Sex Differences
Episodic Memory
Dementia Risk
Rankings
Ranking Based On Selection: 18
Cristiana Cruceanu
Metrics
H-Index
i10 Index
Citation Counts
39
63
9,621
Stress
Psychiatry
Neurodevelopment
Molecular and Cellular Biology
Rankings
Ranking Based On Selection: 19
Howard Margolese
Metrics
H-Index
i10 Index
Citation Counts
33
56
3,856
Psychopharmacology
First- Episode Psychosis
Schizophrenia
Rankings
Ranking Based On Selection: 20
Soham Rej
Metrics
H-Index
i10 Index
Citation Counts
31
82
4,812
Geriatric Mood Disorders
Lithium
Mindfulness/Meditation
Clinical Trials
Pharmaco-epidemiology
Rankings
Ranking Based On Selection: 21
Danielle Groleau
Metrics
H-Index
i10 Index
Citation Counts
30
41
4,014
Cultural psychiatry
breastfeeding
female genital mutilation
qualitative methods
narrative
Rankings
Ranking Based On Selection: 22
Jacques Tremblay
Metrics
H-Index
i10 Index
Citation Counts
30
62
4,469
Clinical Epidemiology
Psychiatry
Dual Disorders
PTSD
Rankings
Ranking Based On Selection: 23
Danilo De Gregorio
Metrics
H-Index
i10 Index
Citation Counts
27
34
2,844
neuroscience
psychopharmacology
mood disorders
anxiety
neuropathic pain
Rankings
Ranking Based On Selection: 24
David Wright
Metrics
H-Index
i10 Index
Citation Counts
26
37
2,288
History of Medicine
history of psychiatry
history of disability
Canadian history
Rankings
Ranking Based On Selection: 25
Sarojini M Sengupta
Metrics
H-Index
i10 Index
Citation Counts
25
35
1,802
Rankings
Ranking Based On Selection: 26
J Bruno Debruille
Metrics
H-Index
i10 Index
Citation Counts
24
33
1,880
Cognition
social
consciousness
electrical brain dynamics
ERPs
Rankings
Ranking Based On Selection: 27
Michael Lifshitz
Metrics
H-Index
i10 Index
Citation Counts
23
32
3,012
meditation
psychedelics
neuroplasticity
imagination
agency
Rankings
Ranking Based On Selection: 28
Sylvia ML Cox
Metrics
H-Index
i10 Index
Citation Counts
23
45
2,645
Rankings
Ranking Based On Selection: 29
Ovidiu Tatar
Metrics
H-Index
i10 Index
Citation Counts
18
21
1,321
addiction psychiatry
e-Mental health
psychosocial factors and preventive health behaviors
human papillomavirus vaccination
c
Rankings
Ranking Based On Selection: 30
Rachel A Rabin
Metrics
H-Index
i10 Index
Citation Counts
17
27
1,187
Psychiatric disorders
Addictions
Cognition
Treatment
Rankings
Ranking Based On Selection: 31
Kyle Greenway
Metrics
H-Index
i10 Index
Citation Counts
12
13
492
Rankings
Ranking Based On Selection: 32
Anouar Khayachi
Metrics
H-Index
i10 Index
Citation Counts
11
12
456
Rankings
Ranking Based On Selection: 33
Vincent Paquin
Metrics
H-Index
i10 Index
Citation Counts
9
9
334
Rankings
Ranking Based On Selection: 34
Nicole D Souza
Metrics
H-Index
i10 Index
Citation Counts
9
8
470
global mental health
transcultural psychiatry
violence and war trauma
adolescent mental health
Rankings
Ranking Based On Selection: 35
Arian Behzadi
Metrics
H-Index
i10 Index
Citation Counts
9
9
640
Rankings
Ranking Based On Selection: 36
Rene Desautels
Metrics
H-Index
i10 Index
Citation Counts
8
8
405
Rankings
Ranking Based On Selection: 37
Minh P. Lam
Metrics
H-Index
i10 Index
Citation Counts
7
6
479
psychiatry
neuroscience
neurology
pharmacology
AI
Rankings
Ranking Based On Selection: 38
Claire Adams
Metrics
H-Index
i10 Index
Citation Counts
7
6
302
psychology
psychiatry
public health
behaviour change
patient engagement
Rankings
Ranking Based On Selection: 39
Claudia Belliveau
Metrics
H-Index
i10 Index
Citation Counts
7
6
269
Rankings
Ranking Based On Selection: 40
Justine Ziolkowski
Metrics
H-Index
i10 Index
Citation Counts
5
4
107
Rankings
Ranking Based On Selection: 41
Christina L. Klassen
Metrics
H-Index
i10 Index
Citation Counts
4
4
124
migration
refugees
mental health
cultural psychology
cultural psychiatry
Rankings
Ranking Based On Selection: 42
Sarah Hanafi
Metrics
H-Index
i10 Index
Citation Counts
3
1
86
Psychiatry
Medical Education
Neuropsychiatry
Health Policy
Transcultural Psychiatry