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" (870,057 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: 2
Matthew Leach
Implementation Science
Health services research
Evidence-based practice
Rural health
Metrics
H-Index
i10 Index
Citation
43
114
6,674
* Rankings
Ranking Based On Selection: 3
Susan Nancarrow
Health Services Research
Health Workforce and Sociology of Professions
Research Capacity Building
Allied Health
E-Health
Metrics
H-Index
i10 Index
Citation
39
86
7,016
* Rankings
Ranking Based On Selection: 5
Jon Wardle
Public Health
Health Policy
Complementary and Alternative Medicine
Naturopathic Medicine
Integrative Medicine
Metrics
H-Index
i10 Index
Citation
35
115
5,443
* Rankings
Ranking Based On Selection: 6
Mike Climstein
Clinical Exercise Physiology
Sports Science
Sports Medicine
Skin Cancer
Artificial Intelligence
Metrics
H-Index
i10 Index
Citation
35
99
5,466
* Rankings
Ranking Based On Selection: 7
Richard Lakeman
Mental health nursing
psychotherapy
suicide
mental health
dialectical behaviour therapy
Metrics
H-Index
i10 Index
Citation
35
82
3,910
* Rankings
Ranking Based On Selection: 8
John Hurley
emotional intelligence
mental health nursing
leadership
Metrics
H-Index
i10 Index
Citation
30
70
3,334
* Rankings
Ranking Based On Selection: 9
Sandra Grace
new models of health care
integrative medicine
interprofessional practice and education
primary health care
Metrics
H-Index
i10 Index
Citation
28
57
2,053

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* Rankings
Ranking Based On Selection: 12
Peter Bai James
Public Health
Complementary Medicine
Pharmacy
Health Service Research
Emerging InfectiousDisease
Metrics
H-Index
i10 Index
Citation
22
37
2,271
* Rankings
Ranking Based On Selection: 14
Jenny Parratt
Midwifery
Education
Feminism
Methodology
Embodied sense of self
Metrics
H-Index
i10 Index
Citation
17
20
1,406
* Rankings
Ranking Based On Selection: 15
Marie Heartfield
nursing and health
policy
regulation
education
workforce
Metrics
H-Index
i10 Index
Citation
16
21
867
* Rankings
Ranking Based On Selection: 16
Mahmudur Rahman
Proteomics
Food Chemistry
Pharmacology
Natural Product Chemistry
Allergy
Metrics
H-Index
i10 Index
Citation
15
19
766
* Rankings
Ranking Based On Selection: 19
Silvia Nelson
HRM
action learning
nursing management
workplace relationships
Metrics
H-Index
i10 Index
Citation
12
15
708
* Rankings
Ranking Based On Selection: 20
Md Mominur Rahman
Natural products
Anti-oxidant
Pharmacy
Pharmacology
Drug delivery
Metrics
H-Index
i10 Index
Citation
12
13
550
Catharine Avila
Complementary and Alternative Medicine
Herbal medicine
Integrative medicine
Public health
Metrics
H-Index
i10 Index
Citation
9
8
312
Sherryn Bailey
Realist Evaluation
early parenting interventions
vulnerability
social disadvantage
Metrics
H-Index
i10 Index
Citation
5
4
385
Rankings
Ranking Based On Selection: 1
Nick Ashbolt
Metrics
H-Index
i10 Index
Citation Counts
77
264
23,498
Rankings
Ranking Based On Selection: 2
Matthew Leach
Metrics
H-Index
i10 Index
Citation Counts
43
114
6,674
Implementation Science
Health services research
Evidence-based practice
Rural health
Rankings
Ranking Based On Selection: 3
Susan Nancarrow
Metrics
H-Index
i10 Index
Citation Counts
39
86
7,016
Health Services Research
Health Workforce and Sociology of Professions
Research Capacity Building
Allied Health
E-Health
Rankings
Ranking Based On Selection: 4
Andrew Cashin
Metrics
H-Index
i10 Index
Citation Counts
37
96
3,762
Rankings
Ranking Based On Selection: 5
Jon Wardle
Metrics
H-Index
i10 Index
Citation Counts
35
115
5,443
Public Health
Health Policy
Complementary and Alternative Medicine
Naturopathic Medicine
Integrative Medicine
Rankings
Ranking Based On Selection: 6
Mike Climstein
Metrics
H-Index
i10 Index
Citation Counts
35
99
5,466
Clinical Exercise Physiology
Sports Science
Sports Medicine
Skin Cancer
Artificial Intelligence
Rankings
Ranking Based On Selection: 7
Richard Lakeman
Metrics
H-Index
i10 Index
Citation Counts
35
82
3,910
Mental health nursing
psychotherapy
suicide
mental health
dialectical behaviour therapy
Rankings
Ranking Based On Selection: 8
John Hurley
Metrics
H-Index
i10 Index
Citation Counts
30
70
3,334
emotional intelligence
mental health nursing
leadership
Rankings
Ranking Based On Selection: 9
Sandra Grace
Metrics
H-Index
i10 Index
Citation Counts
28
57
2,053
new models of health care
integrative medicine
interprofessional practice and education
primary health care
Rankings
Ranking Based On Selection: 10
Deb Massey
Metrics
H-Index
i10 Index
Citation Counts
26
53
2,685

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! 

Rankings
Ranking Based On Selection: 11
Deborah A Edwards Donoghue
Metrics
H-Index
i10 Index
Citation Counts
23
34
2,251
Rankings
Ranking Based On Selection: 12
Peter Bai James
Metrics
H-Index
i10 Index
Citation Counts
22
37
2,271
Public Health
Complementary Medicine
Pharmacy
Health Service Research
Emerging InfectiousDisease
Rankings
Ranking Based On Selection: 13
Alison Bowling
Metrics
H-Index
i10 Index
Citation Counts
20
30
2,117
Rankings
Ranking Based On Selection: 14
Jenny Parratt
Metrics
H-Index
i10 Index
Citation Counts
17
20
1,406
Midwifery
Education
Feminism
Methodology
Embodied sense of self
Rankings
Ranking Based On Selection: 15
Marie Heartfield
Metrics
H-Index
i10 Index
Citation Counts
16
21
867
nursing and health
policy
regulation
education
workforce
Rankings
Ranking Based On Selection: 16
Mahmudur Rahman
Metrics
H-Index
i10 Index
Citation Counts
15
19
766
Proteomics
Food Chemistry
Pharmacology
Natural Product Chemistry
Allergy
Rankings
Ranking Based On Selection: 17
Elaine Jefford
Metrics
H-Index
i10 Index
Citation Counts
14
18
660
Rankings
Ranking Based On Selection: 18
Paul Butterworth
Metrics
H-Index
i10 Index
Citation Counts
13
13
1,160
Rankings
Ranking Based On Selection: 19
Silvia Nelson
Metrics
H-Index
i10 Index
Citation Counts
12
15
708
HRM
action learning
nursing management
workplace relationships
Rankings
Ranking Based On Selection: 20
Md Mominur Rahman
Metrics
H-Index
i10 Index
Citation Counts
12
13
550
Natural products
Anti-oxidant
Pharmacy
Pharmacology
Drug delivery
Rankings
Ranking Based On Selection: 21
Kachina Allen
Metrics
H-Index
i10 Index
Citation Counts
9
8
592
Rankings
Ranking Based On Selection: 22
Catharine Avila
Metrics
H-Index
i10 Index
Citation Counts
9
8
312
Complementary and Alternative Medicine
Herbal medicine
Integrative medicine
Public health
Rankings
Ranking Based On Selection: 23
Sherryn Bailey
Metrics
H-Index
i10 Index
Citation Counts
5
4
385
Realist Evaluation
early parenting interventions
vulnerability
social disadvantage
Rankings
Ranking Based On Selection: 24
Kolleen Miller Rosser
Metrics
H-Index
i10 Index
Citation Counts
5
3
250
Rankings
Ranking Based On Selection: 25
Alexander J Terrill
Metrics
H-Index
i10 Index
Citation Counts
4
1
35
Rankings
Ranking Based On Selection: 26
Tracy Samkele Tabvuma
Metrics
H-Index
i10 Index
Citation Counts
3
2
60
Mental health nursing
physical health care
psychotherapy
Rankings
Ranking Based On Selection: 27
Yingyan Chen
Metrics
H-Index
i10 Index
Citation Counts
3
1
27
Rankings
Ranking Based On Selection: 28
Kay Ross
Metrics
H-Index
i10 Index
Citation Counts
1
1
154