World

Citation Rankings
Highly Cited Researchers

Others Highly Cited Researchers 2.770 Scientists Citation Rankings - 2025

The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

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Total 2.770 scientists
* Total Citation Counts Rankings
World Rank
986
Country Rank
40
Institution Rank: 4
Ranking Based On Selection: 1
Canada
Lawrence Leiter
Lawrence Leiter
University of Toronto
Toronto , Canada
Others
Diabetes
Lipids
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
185,198
79,634
0.430
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
1,249
Country Rank
50
Institution Rank: 8
Ranking Based On Selection: 2
Canada
Andrea Tricco
Andrea Tricco
University of Toronto
Toronto , Canada
Others
systematic reviews
network meta-analysis
meta-analysis
knowledge synthesis
evidence-informed practice
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
163,325
151,691
0.929
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
1,272
Country Rank
51
Institution Rank: 9
Ranking Based On Selection: 3
Canada
Slutsky AS
Slutsky AS
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
161,625
73,387
0.454
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
1,542
Country Rank
63
Institution Rank: 11
Ranking Based On Selection: 4
Canada
Larissa Shamseer
Larissa Shamseer
University of Toronto
Toronto , Canada
Others
Scholarly Publishing
meta-research
equity
intersectionality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
146,470
133,786
0.913
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
2,441
Country Rank
91
Institution Rank: 14
Ranking Based On Selection: 5
Canada
Sharon Straus
Sharon Straus
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
115,166
68,769
0.597
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
3,174
Country Rank
119
Institution Rank: 21
Ranking Based On Selection: 6
Canada
Harald Pfeiffer
Harald Pfeiffer
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,889
70,040
0.694
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
3,246
Country Rank
122
Institution Rank: 22
Ranking Based On Selection: 7
Canada
Laurie J Morrison
Laurie J Morrison
University of Toronto
Toronto , Canada
Others
resuscitation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
99,724
35,679
0.358
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
3,901
Country Rank
150
Institution Rank: 25
Ranking Based On Selection: 8
Canada
Subodh Verma
Subodh Verma
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,384
52,699
0.583
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
4,778
Country Rank
181
Institution Rank: 32
Ranking Based On Selection: 9
Canada
Zindel Segal
Zindel Segal
University of Toronto
Toronto , Canada
Others
Depression
Meditation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80,276
23,484
0.293
See All Rankings and Analysis

Showcase your academic strength and achievements to the world in the most effective way – join now and achieve results fast!

* Total Citation Counts Rankings
World Rank
4,795
Country Rank
183
Institution Rank: 33
Ranking Based On Selection: 10
Canada
Lewis E Kay
Lewis E Kay
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80,053
13,744
0.172
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
5,675
Country Rank
220
Institution Rank: 35
Ranking Based On Selection: 11
Canada
Peter Liu
Peter Liu
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
72,303
22,452
0.311
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
5,837
Country Rank
227
Institution Rank: 37
Ranking Based On Selection: 12
Canada
Gillian A Hawker
Gillian A Hawker
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,163
29,437
0.414
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
5,838
Country Rank
228
Institution Rank: 38
Ranking Based On Selection: 13
Canada
Morris Moscovitch
Morris Moscovitch
University of Toronto
Toronto , Canada
Others
Cognition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,163
17,542
0.247
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
7,542
Country Rank
281
Institution Rank: 45
Ranking Based On Selection: 14
Canada
Timothy R Hughes
Timothy R Hughes
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,674
16,703
0.275
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
8,129
Country Rank
306
Institution Rank: 47
Ranking Based On Selection: 15
Canada
Sangeeta Mehta
Sangeeta Mehta
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,959
30,639
0.529
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
8,513
Country Rank
323
Institution Rank: 50
Ranking Based On Selection: 16
Canada
Robert Josse
Robert Josse
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,373
13,026
0.231
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
8,734
Country Rank
333
Institution Rank: 53
Ranking Based On Selection: 17
Canada
PS Ohashi
PS Ohashi
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,452
9,412
0.170
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
9,035
Country Rank
348
Institution Rank: 57
Ranking Based On Selection: 18
Canada
Heather Colquhoun
Heather Colquhoun
University of Toronto
Toronto , Canada
Others
Implementation Science
Knowledge Translation
Occupational Therapy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,318
47,409
0.873
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
9,681
Country Rank
379
Institution Rank: 60
Ranking Based On Selection: 19
Canada
Stephen Girardin
Stephen Girardin
University of Toronto
Toronto , Canada
Others
Innate immunity
Nod-like receptors
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,038
16,691
0.321
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
10,126
Country Rank
396
Institution Rank: 62
Ranking Based On Selection: 20
Canada
Terence Picton
Terence Picton
University of Toronto
Toronto , Canada
Others
hearing
cognition
EEG
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,605
7,503
0.148
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
10,428
Country Rank
407
Institution Rank: 65
Ranking Based On Selection: 21
Canada
Niall Ferguson
Niall Ferguson
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,589
28,567
0.576
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
12,749
Country Rank
492
Institution Rank: 82
Ranking Based On Selection: 22
Canada
Martin Yaffe
Martin Yaffe
University of Toronto
Toronto , Canada
Others
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,719
9,216
0.211
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
13,392
Country Rank
530
Institution Rank: 90
Ranking Based On Selection: 23
Canada
Kevin D Shield
Kevin D Shield
University of Toronto
Toronto , Canada
Others
Alcohol
Health Modelling
Addiction and Mental Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,402
24,729
0.583
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
13,556
Country Rank
535
Institution Rank: 93
Ranking Based On Selection: 24
Canada
Jeffrey R Brook
Jeffrey R Brook
University of Toronto
Toronto , Canada
Others
Environmental Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,051
16,086
0.383
See All Rankings and Analysis
* Total Citation Counts Rankings
World Rank
13,965
Country Rank
551
Institution Rank: 95
Ranking Based On Selection: 25
Canada
Ren Ke Li
Ren Ke Li
University of Toronto
Toronto , Canada
Others
heart failure
myocardial infarction
cell transplantation
stem cell differentiation
cell and gene therapy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,291
9,672
0.234
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
986
Canada
40
4
Ranking Based On Selection: 1
Lawrence Leiter
Lawrence Leiter
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
185,198
79,634
0.430
Others
Diabetes
Lipids
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
1,249
Canada
50
8
Ranking Based On Selection: 2
Andrea Tricco
Andrea Tricco
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
163,325
151,691
0.929
Others
systematic reviews
network meta-analysis
meta-analysis
knowledge synthesis
evidence-informed practice
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
1,272
Canada
51
9
Ranking Based On Selection: 3
Slutsky AS
Slutsky AS
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
161,625
73,387
0.454
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
1,542
Canada
63
11
Ranking Based On Selection: 4
Larissa Shamseer
Larissa Shamseer
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
146,470
133,786
0.913
Others
Scholarly Publishing
meta-research
equity
intersectionality
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
2,441
Canada
91
14
Ranking Based On Selection: 5
Sharon Straus
Sharon Straus
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
115,166
68,769
0.597
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
3,174
Canada
119
21
Ranking Based On Selection: 6
Harald Pfeiffer
Harald Pfeiffer
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,889
70,040
0.694
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
3,246
Canada
122
22
Ranking Based On Selection: 7
Laurie J Morrison
Laurie J Morrison
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
99,724
35,679
0.358
Others
resuscitation
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
3,901
Canada
150
25
Ranking Based On Selection: 8
Subodh Verma
Subodh Verma
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,384
52,699
0.583
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
4,778
Canada
181
32
Ranking Based On Selection: 9
Zindel Segal
Zindel Segal
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80,276
23,484
0.293
Others
Depression
Meditation
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
4,795
Canada
183
33
Ranking Based On Selection: 10
Lewis E Kay
Lewis E Kay
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80,053
13,744
0.172
Others
See All Rankings and Analysis

Showcase your academic strength and achievements to the world in the most effective way – join now and achieve results fast!

* Total Citation Counts Rankings
Rankings
5,675
Canada
220
35
Ranking Based On Selection: 11
Peter Liu
Peter Liu
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
72,303
22,452
0.311
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
5,837
Canada
227
37
Ranking Based On Selection: 12
Gillian A Hawker
Gillian A Hawker
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,163
29,437
0.414
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
5,838
Canada
228
38
Ranking Based On Selection: 13
Morris Moscovitch
Morris Moscovitch
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,163
17,542
0.247
Others
Cognition
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
7,542
Canada
281
45
Ranking Based On Selection: 14
Timothy R Hughes
Timothy R Hughes
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,674
16,703
0.275
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
8,129
Canada
306
47
Ranking Based On Selection: 15
Sangeeta Mehta
Sangeeta Mehta
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,959
30,639
0.529
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
8,513
Canada
323
50
Ranking Based On Selection: 16
Robert Josse
Robert Josse
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,373
13,026
0.231
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
8,734
Canada
333
53
Ranking Based On Selection: 17
PS Ohashi
PS Ohashi
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,452
9,412
0.170
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
9,035
Canada
348
57
Ranking Based On Selection: 18
Heather Colquhoun
Heather Colquhoun
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,318
47,409
0.873
Others
Implementation Science
Knowledge Translation
Occupational Therapy
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
9,681
Canada
379
60
Ranking Based On Selection: 19
Stephen Girardin
Stephen Girardin
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,038
16,691
0.321
Others
Innate immunity
Nod-like receptors
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
10,126
Canada
396
62
Ranking Based On Selection: 20
Terence Picton
Terence Picton
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,605
7,503
0.148
Others
hearing
cognition
EEG
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
10,428
Canada
407
65
Ranking Based On Selection: 21
Niall Ferguson
Niall Ferguson
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,589
28,567
0.576
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
12,749
Canada
492
82
Ranking Based On Selection: 22
Martin Yaffe
Martin Yaffe
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,719
9,216
0.211
Others
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
13,392
Canada
530
90
Ranking Based On Selection: 23
Kevin D Shield
Kevin D Shield
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,402
24,729
0.583
Others
Alcohol
Health Modelling
Addiction and Mental Health
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
13,556
Canada
535
93
Ranking Based On Selection: 24
Jeffrey R Brook
Jeffrey R Brook
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,051
16,086
0.383
Others
Environmental Health
See All Rankings and Analysis
* Total Citation Counts Rankings
Rankings
13,965
Canada
551
95
Ranking Based On Selection: 25
Ren Ke Li
Ren Ke Li
University of Toronto Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,291
9,672
0.234
Others
heart failure
myocardial infarction
cell transplantation
stem cell differentiation
cell and gene therapy
See All Rankings and Analysis