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 :2
Zaheer Ud Din Babar
Pharmaceutical Policy
Access to Medicines
Pharmacy Practice Research
Pharmaceutical Pricing
Metrics
H-Index
i10 Index
Citation
50
172
9,495
* Rankings
Ranking Based On Selection :6
Kirsty Mclean
biochemistry
enzymology
synthetic biology
structural biology
P450 enzymes
Metrics
H-Index
i10 Index
Citation
44
82
6,548
* Rankings
Ranking Based On Selection :8
Ann Louise Caress
health services research
living with and management of long term conditions
respiratory
renal
patient and public involvement
Metrics
H-Index
i10 Index
Citation
42
79
4,734
* Rankings
Ranking Based On Selection :11
Mahendra G Patel
Pharmacy practice
diabetes and cardiovascular disease in minority ethnic groups
medicines optimisation
NICE
NIHR research
Metrics
H-Index
i10 Index
Citation
35
69
5,079
* Rankings
Ranking Based On Selection :13
Hamid A Merchant
Drug Delivery
Gastroenterology
Diabetes
Biopharmaceutics
Clinical Pharmaceutics
Metrics
H-Index
i10 Index
Citation
31
47
3,985
* Rankings
Ranking Based On Selection :15
Nick Hardiker
Health Informatics
Nursing Informatics
eHealth
Nursing Terminology
Metrics
H-Index
i10 Index
Citation
30
59
3,600
* Rankings
Ranking Based On Selection :19
Christine Hallett
History of Nursing
History of Medicine
Women's History
Public History
Metrics
H-Index
i10 Index
Citation
23
44
2,966
* Rankings
Ranking Based On Selection :21
Sharada PD Wasti
Global Health
Health System Strengthening
Migrantion Health
HIV/TB
MNCH
Metrics
H-Index
i10 Index
Citation
22
37
1,805
* Rankings
Ranking Based On Selection :24
Bibha Simkhada
International Nursing Workforce Development
Ageing Research (Dementia)
BAME Health
Mental Health
Metrics
H-Index
i10 Index
Citation
21
28
2,718
* Rankings
Ranking Based On Selection :25
Nicola J Gray
Pharmacy
Young People's Health
Health Literacy
Internet
School Health
Metrics
H-Index
i10 Index
Citation
21
34
2,902
* Rankings
Ranking Based On Selection :31
Joyce L Marshall
infant feeding
breastfeeding
maternal and child health
midwifery
knowledge and evidence use
Metrics
H-Index
i10 Index
Citation
16
19
2,559
* Rankings
Ranking Based On Selection :32
Georgios Psakis
membrane protein biochemistry
structural biology
apoptosis
synthetic biology
Metrics
H-Index
i10 Index
Citation
16
16
785
* Rankings
Ranking Based On Selection :33
Steve Lui
Health ReseaRCH
iNFERTILITY
eVIDENCE bASED hEALTH cARE
Metrics
H-Index
i10 Index
Citation
15
20
1,579
* Rankings
Ranking Based On Selection :35
Michael Snowden
mentoring
pedagogy
flexible learning
social enterprise
public health.
Metrics
H-Index
i10 Index
Citation
14
22
858
* Rankings
Ranking Based On Selection :36
John Synnott
Psychology
Investigative Psychology
Security Science
Online Abuse
Metrics
H-Index
i10 Index
Citation
14
16
811
* Rankings
Ranking Based On Selection :40
nadia wager
Victimology
sexual revictimization
sexual victimization
restorative justice
child sexual abuse
Metrics
H-Index
i10 Index
Citation
13
16
734
* Rankings
Ranking Based On Selection :42
Precious Adade Duodu
Noncommunicable diseases
Maternal & Child Health
Nutrition
Nursing Education & Practice Regulation
Metrics
H-Index
i10 Index
Citation
12
14
445
* Rankings
Ranking Based On Selection :43
Anna Murphy
neuropsychopharmacology
addiction
psychiatry
schizophrenia
Metrics
H-Index
i10 Index
Citation
12
13
489
* Rankings
Ranking Based On Selection :46
Romana Mughal
Insulin Resistance
Cardiovascular
Diabetes
Diabetic Eye
Optometry
Metrics
H-Index
i10 Index
Citation
11
12
594
* Rankings
Ranking Based On Selection :47
Andrew Bland
Nursing Education
Acute Care
Emergency Care
Simulation-Based Education
Learning Theories
Metrics
H-Index
i10 Index
Citation
11
11
876
Sarah Reel
forensic podiatry
reliability
validity
podiatry
forensic standards
Metrics
H-Index
i10 Index
Citation
7
7
316
Stephen Prescott
Pre- and post-registration Nursing Education
Simulation-based learning. Acute and Critical Care
Metrics
H-Index
i10 Index
Citation
6
6
505
Caroline Barker
Nurse Education
Curriculum Development
Qualitative Research
Quality Assurance
Metrics
H-Index
i10 Index
Citation
6
4
133
Linda Sanderson
Nursing
children's nursing
children's cancer care
blended learning
simulated learning
Metrics
H-Index
i10 Index
Citation
5
3
57
Corinne Fulcher
age-related macular degeneration
vision
medical retina
optometry profession
subsecond duration processing
Metrics
H-Index
i10 Index
Citation
4
3
49
Sally Arrey
Qualitative methodologies with a particular interest in Hermeneutic Phenomenology
Person Centred Research
Supportive and Palli
Metrics
H-Index
i10 Index
Citation
3
1
27
Rankings
Ranking Based On Selection: 1
Padam Simkhada
Metrics
H-Index
i10 Index
Citation Counts
56
167
12,377
Rankings
Ranking Based On Selection: 2
Zaheer Ud Din Babar
Metrics
H-Index
i10 Index
Citation Counts
50
172
9,495
Pharmaceutical Policy
Access to Medicines
Pharmacy Practice Research
Pharmaceutical Pricing
Rankings
Ranking Based On Selection: 3
RM Phillips
Metrics
H-Index
i10 Index
Citation Counts
45
118
6,705
Rankings
Ranking Based On Selection: 4
Roger Phillips
Metrics
H-Index
i10 Index
Citation Counts
45
116
6,593
Rankings
Ranking Based On Selection: 5
Barbara Conway
Metrics
H-Index
i10 Index
Citation Counts
44
119
6,690
Rankings
Ranking Based On Selection: 6
Kirsty Mclean
Metrics
H-Index
i10 Index
Citation Counts
44
82
6,548
biochemistry
enzymology
synthetic biology
structural biology
P450 enzymes
Rankings
Ranking Based On Selection: 7
Syed Shahzad Hasan
Metrics
H-Index
i10 Index
Citation Counts
43
145
8,245
Rankings
Ranking Based On Selection: 8
Ann Louise Caress
Metrics
H-Index
i10 Index
Citation Counts
42
79
4,734
health services research
living with and management of long term conditions
respiratory
renal
patient and public involvement
Rankings
Ranking Based On Selection: 9
Olumayokun A Olajide
Metrics
H-Index
i10 Index
Citation Counts
39
66
4,524
Rankings
Ranking Based On Selection: 10
Karen Ousey
Metrics
H-Index
i10 Index
Citation Counts
38
125
5,868
Rankings
Ranking Based On Selection: 11
Mahendra G Patel
Metrics
H-Index
i10 Index
Citation Counts
35
69
5,079
Pharmacy practice
diabetes and cardiovascular disease in minority ethnic groups
medicines optimisation
NICE
NIHR research
Rankings
Ranking Based On Selection: 12
Bob Heyman
Metrics
H-Index
i10 Index
Citation Counts
35
67
4,411
Rankings
Ranking Based On Selection: 13
Hamid A Merchant
Metrics
H-Index
i10 Index
Citation Counts
31
47
3,985
Drug Delivery
Gastroenterology
Diabetes
Biopharmaceutics
Clinical Pharmaceutics
Rankings
Ranking Based On Selection: 14
Felicity Astin *
Metrics
H-Index
i10 Index
Citation Counts
31
57
10,722
Rankings
Ranking Based On Selection: 15
Nick Hardiker
Metrics
H-Index
i10 Index
Citation Counts
30
59
3,600
Health Informatics
Nursing Informatics
eHealth
Nursing Terminology
Rankings
Ranking Based On Selection: 16
Kofi Asare Addo
Metrics
H-Index
i10 Index
Citation Counts
28
57
2,292
Rankings
Ranking Based On Selection: 17
Liane Azevedo
Metrics
H-Index
i10 Index
Citation Counts
26
38
4,181
Rankings
Ranking Based On Selection: 18
Muhammad Usman Ghori
Metrics
H-Index
i10 Index
Citation Counts
25
41
1,921
Pharmacy
Materials
Drug Delivery
Public Health
Biological Medicines
Rankings
Ranking Based On Selection: 19
Christine Hallett
Metrics
H-Index
i10 Index
Citation Counts
23
44
2,966
History of Nursing
History of Medicine
Women's History
Public History
Rankings
Ranking Based On Selection: 20
Paul Humphreys
Metrics
H-Index
i10 Index
Citation Counts
23
37
1,654
Rankings
Ranking Based On Selection: 21
Sharada PD Wasti
Metrics
H-Index
i10 Index
Citation Counts
22
37
1,805
Global Health
Health System Strengthening
Migrantion Health
HIV/TB
MNCH
Rankings
Ranking Based On Selection: 22
Tomasina Stacey
Metrics
H-Index
i10 Index
Citation Counts
22
27
1,618
Rankings
Ranking Based On Selection: 23
Aminu Lawan Abdullahi
Metrics
H-Index
i10 Index
Citation Counts
21
33
2,317
Rankings
Ranking Based On Selection: 24
Bibha Simkhada
Metrics
H-Index
i10 Index
Citation Counts
21
28
2,718
International Nursing Workforce Development
Ageing Research (Dementia)
BAME Health
Mental Health
Rankings
Ranking Based On Selection: 25
Nicola J Gray
Metrics
H-Index
i10 Index
Citation Counts
21
34
2,902
Pharmacy
Young People's Health
Health Literacy
Internet
School Health
Rankings
Ranking Based On Selection: 26
John Siderov
Metrics
H-Index
i10 Index
Citation Counts
20
28
1,067
Rankings
Ranking Based On Selection: 27
James I Wells
Metrics
H-Index
i10 Index
Citation Counts
20
30
4,960
Rankings
Ranking Based On Selection: 28
Farideh Javid
Metrics
H-Index
i10 Index
Citation Counts
19
26
1,094
Rankings
Ranking Based On Selection: 29
Joanne Garside
Metrics
H-Index
i10 Index
Citation Counts
17
19
1,119
Rankings
Ranking Based On Selection: 30
Mary Turner
Metrics
H-Index
i10 Index
Citation Counts
16
21
1,071
Rankings
Ranking Based On Selection: 31
Joyce L Marshall
Metrics
H-Index
i10 Index
Citation Counts
16
19
2,559
infant feeding
breastfeeding
maternal and child health
midwifery
knowledge and evidence use
Rankings
Ranking Based On Selection: 32
Georgios Psakis
Metrics
H-Index
i10 Index
Citation Counts
16
16
785
membrane protein biochemistry
structural biology
apoptosis
synthetic biology
Rankings
Ranking Based On Selection: 33
Steve Lui
Metrics
H-Index
i10 Index
Citation Counts
15
20
1,579
Health ReseaRCH
iNFERTILITY
eVIDENCE bASED hEALTH cARE
Rankings
Ranking Based On Selection: 34
Adeola O Adebisi
Metrics
H-Index
i10 Index
Citation Counts
15
17
573
Drug delivery
Gastroretention
Mucoadhesion
Floating hydrogels.
Rankings
Ranking Based On Selection: 35
Michael Snowden
Metrics
H-Index
i10 Index
Citation Counts
14
22
858
mentoring
pedagogy
flexible learning
social enterprise
public health.
Rankings
Ranking Based On Selection: 36
John Synnott
Metrics
H-Index
i10 Index
Citation Counts
14
16
811
Psychology
Investigative Psychology
Security Science
Online Abuse
Rankings
Ranking Based On Selection: 37
EL HASSANE LARHRIB
Metrics
H-Index
i10 Index
Citation Counts
14
15
978
Rankings
Ranking Based On Selection: 38
John Playle
Metrics
H-Index
i10 Index
Citation Counts
14
18
1,128
Rankings
Ranking Based On Selection: 39
Glyn Hallam
Metrics
H-Index
i10 Index
Citation Counts
13
14
1,335
Rankings
Ranking Based On Selection: 40
nadia wager
Metrics
H-Index
i10 Index
Citation Counts
13
16
734
Victimology
sexual revictimization
sexual victimization
restorative justice
child sexual abuse
Rankings
Ranking Based On Selection: 41
barry m doyle
Metrics
H-Index
i10 Index
Citation Counts
13
18
531
Rankings
Ranking Based On Selection: 42
Precious Adade Duodu
Metrics
H-Index
i10 Index
Citation Counts
12
14
445
Noncommunicable diseases
Maternal & Child Health
Nutrition
Nursing Education & Practice Regulation
Rankings
Ranking Based On Selection: 43
Anna Murphy
Metrics
H-Index
i10 Index
Citation Counts
12
13
489
neuropsychopharmacology
addiction
psychiatry
schizophrenia
Rankings
Ranking Based On Selection: 44
Erica Gold
Metrics
H-Index
i10 Index
Citation Counts
11
12
639
Rankings
Ranking Based On Selection: 46
Romana Mughal
Metrics
H-Index
i10 Index
Citation Counts
11
12
594
Insulin Resistance
Cardiovascular
Diabetes
Diabetic Eye
Optometry
Rankings
Ranking Based On Selection: 47
Andrew Bland
Metrics
H-Index
i10 Index
Citation Counts
11
11
876
Nursing Education
Acute Care
Emergency Care
Simulation-Based Education
Learning Theories
Rankings
Ranking Based On Selection: 48
Sarah Reel
Metrics
H-Index
i10 Index
Citation Counts
7
7
316
forensic podiatry
reliability
validity
podiatry
forensic standards
Rankings
Ranking Based On Selection: 49
Stephen Prescott
Metrics
H-Index
i10 Index
Citation Counts
6
6
505
Pre- and post-registration Nursing Education
Simulation-based learning. Acute and Critical Care
Rankings
Ranking Based On Selection: 50
Susan Jones
Metrics
H-Index
i10 Index
Citation Counts
6
5
398
Rankings
Ranking Based On Selection: 51
Caroline Barker
Metrics
H-Index
i10 Index
Citation Counts
6
4
133
Nurse Education
Curriculum Development
Qualitative Research
Quality Assurance
Rankings
Ranking Based On Selection: 52
Graham Ormrod
Metrics
H-Index
i10 Index
Citation Counts
6
6
167
Rankings
Ranking Based On Selection: 53
Cath Kirby
Metrics
H-Index
i10 Index
Citation Counts
5
5
112
Rankings
Ranking Based On Selection: 54
Linda Sanderson
Metrics
H-Index
i10 Index
Citation Counts
5
3
57
Nursing
children's nursing
children's cancer care
blended learning
simulated learning
Rankings
Ranking Based On Selection: 55
Corinne Fulcher
Metrics
H-Index
i10 Index
Citation Counts
4
3
49
age-related macular degeneration
vision
medical retina
optometry profession
subsecond duration processing
Rankings
Ranking Based On Selection: 56
Ian Noonan
Metrics
H-Index
i10 Index
Citation Counts
4
2
100
Rankings
Ranking Based On Selection: 57
Deborah Pufal
Metrics
H-Index
i10 Index
Citation Counts
4
2
80
Rankings
Ranking Based On Selection: 58
Niall Hynes
Metrics
H-Index
i10 Index
Citation Counts
3
0
20
accommodation
digital eye strain
myopia
sports vision
Rankings
Ranking Based On Selection: 59
Sally Arrey
Metrics
H-Index
i10 Index
Citation Counts
3
1
27
Qualitative methodologies with a particular interest in Hermeneutic Phenomenology
Person Centred Research
Supportive and Palli
Rankings
Ranking Based On Selection: 60
Jennifer Killey
Metrics
H-Index
i10 Index
Citation Counts
2
2
29
Rankings
Ranking Based On Selection: 61
Jackie Vasey
Metrics
H-Index
i10 Index
Citation Counts
2
1
46
child nursing
consent
family centred care
children's pain care
Rankings
Ranking Based On Selection: 62
Katie Batley
Metrics
H-Index
i10 Index
Citation Counts
2
1
20
Simulation
Safeguarding
Child Health
Qualitative Research
Rankings
Ranking Based On Selection: 63
Donna Kemp
Metrics
H-Index
i10 Index
Citation Counts
2
0
7
Rankings
Ranking Based On Selection: 64
Jayne Samples
Metrics
H-Index
i10 Index
Citation Counts
2
0
11
Rankings
Ranking Based On Selection: 65
Sarah Batt
Metrics
H-Index
i10 Index
Citation Counts
1
1
30
Rankings
Ranking Based On Selection: 66
Stephen Hogarth
Metrics
H-Index
i10 Index
Citation Counts
1
0
7
Rankings
Ranking Based On Selection: 67
Nadeem Zia
Metrics
H-Index
i10 Index
Citation Counts
1
0
6
Rankings
Ranking Based On Selection: 68
Elizabeth Horncastle
Metrics
H-Index
i10 Index
Citation Counts
1
0
4
Rankings
Ranking Based On Selection: 69
Dan Redfearn
Metrics
H-Index
i10 Index
Citation Counts
1
0
3
Learning Disabilities
Autism
User Involvement
Inclusion