Citation Rankings
Highly Cited Researchers

McMaster University Highly Cited Researchers Citation Rankings 2025

The Citation Rankings (Highly Cited Researchers) 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.

* Total Citation Counts Rankings
Ranking Based On Selection :1
Canada
Gordon Guyatt
Evidence-based medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
593,508
291,745
0.492
* Total Citation Counts Rankings
Ranking Based On Selection :2
Canada
Salim Yusuf
Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
516,791
165,677
0.321
* Total Citation Counts Rankings
Ranking Based On Selection :3
Canada
PJ Devereaux
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
371,022
221,595
0.597
* Total Citation Counts Rankings
Ranking Based On Selection :4
Canada
Deborah Cook
Critical Care Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
343,396
152,573
0.444
* Total Citation Counts Rankings
Ranking Based On Selection :5
Canada
Holger Schünemann
GRADE
Recommendations
Knowledge Synthesis
Systematic Reviews
Guidelines
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
302,358
176,830
0.585
* Total Citation Counts Rankings
Ranking Based On Selection :6
Canada
Jack Hirsh
Thrombosis andnhemostasis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
254,937
53,306
0.209
* Total Citation Counts Rankings
Ranking Based On Selection :7
Canada
John Eikelboom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
210,590
86,870
0.413
* Total Citation Counts Rankings
Ranking Based On Selection :8
Canada
Stuart J Connolly
medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
200,656
74,162
0.370
* Total Citation Counts Rankings
Ranking Based On Selection :9
Canada
Anand S
Vascular medicine
ethnicity
population health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
171,146
69,248
0.405
* Total Citation Counts Rankings
Ranking Based On Selection :10
Canada
Janice Pogue
Evidence-based strategies to optimize the conduct of clinical research studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
162,659
51,854
0.319
* Total Citation Counts Rankings
Ranking Based On Selection :11
Canada
Jeff Healey
Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
148,484
59,070
0.398
* Total Citation Counts Rankings
Ranking Based On Selection :12
Canada
Henry A Giroux
higher education
youth studies
social theory
critical pedagogy
cultural studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
147,184
39,956
0.271
* Total Citation Counts Rankings
Ranking Based On Selection :13
Canada
Roman Jaeschke
medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
144,315
53,221
0.369
* Total Citation Counts Rankings
Ranking Based On Selection :14
Canada
R Brian Haynes
clinical epidemiology
evidence-based knowledge translation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
135,595
27,388
0.202
* Total Citation Counts Rankings
Ranking Based On Selection :15
Canada
Andrew T Olagunju
Psychiatric epidemiology
public mental health
global health
medical education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
131,694
125,094
0.950
* Total Citation Counts Rankings
Ranking Based On Selection :16
Canada
Hertzel Gerstein
diabetes
dysglycemia
clinical trials
cardiovascular
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
128,225
39,704
0.310
* Total Citation Counts Rankings
Ranking Based On Selection :17
Canada
Ben Bolker
ecology
evolution
epidemiology
statistics
theoretical biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
120,066
90,101
0.750
* Total Citation Counts Rankings
Ranking Based On Selection :18
Canada
James Douketis
perioperative antithrombotic management
venous thromboembolism
anticoagulant therapy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
113,973
36,380
0.319
* Total Citation Counts Rankings
Ranking Based On Selection :19
Canada
Joseph Beyene
Biostatistical modelling
statistical genomics
meta-analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
112,892
49,436
0.438
* Total Citation Counts Rankings
Ranking Based On Selection :20
Canada
Robby Nieuwlaat
Clinical Epidemiology
Guidelines
Systematic Reviews
Knowledge Translation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107,616
48,802
0.453
* Total Citation Counts Rankings
Ranking Based On Selection :21
Canada
Clive Kearon
clinical thromboembolism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107,614
34,856
0.324
* Total Citation Counts Rankings
Ranking Based On Selection :22
Canada
Jeffrey Weitz
Hematology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
106,596
42,620
0.400
* Total Citation Counts Rankings
Ranking Based On Selection :23
Canada
Jan Brozek
clinical practice guidelines
systematic reviews
allergy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
98,602
64,821
0.657
* Total Citation Counts Rankings
Ranking Based On Selection :24
Canada
Stephen Walter
Statistics
Biostatistics
clinical epidemiology
public health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
94,826
26,627
0.281
* Total Citation Counts Rankings
Ranking Based On Selection :25
Canada
Mark Crowther
Hematology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
92,148
32,172
0.349
* Total Citation Counts Rankings
Rankings
10
Canada
3
1
Ranking Based On Selection: 1
Gordon Guyatt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
593,508
291,745
0.492
* Total Citation Counts Rankings
Rankings
20
Canada
4
2
Ranking Based On Selection: 2
Salim Yusuf
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
516,791
165,677
0.321
* Total Citation Counts Rankings
Rankings
92
Canada
8
3
Ranking Based On Selection: 3
PJ Devereaux
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
371,022
221,595
0.597
* Total Citation Counts Rankings
Rankings
137
Canada
12
4
Ranking Based On Selection: 4
Deborah Cook
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
343,396
152,573
0.444
* Total Citation Counts Rankings
Rankings
208
Canada
13
5
Ranking Based On Selection: 5
Holger Schünemann
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
302,358
176,830
0.585
GRADE
Recommendations
Knowledge Synthesis
Systematic Reviews
Guidelines
* Total Citation Counts Rankings
Rankings
408
Canada
21
6
Ranking Based On Selection: 6
Jack Hirsh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
254,937
53,306
0.209
* Total Citation Counts Rankings
Rankings
712
Canada
30
7
Ranking Based On Selection: 7
John Eikelboom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
210,590
86,870
0.413
* Total Citation Counts Rankings
Rankings
805
Canada
37
8
Ranking Based On Selection: 8
Stuart J Connolly
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
200,656
74,162
0.370
* Total Citation Counts Rankings
Rankings
1,100
Canada
41
9
Ranking Based On Selection: 9
Anand S
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
171,146
69,248
0.405
Vascular medicine
ethnicity
population health
* Total Citation Counts Rankings
Rankings
1,214
Canada
45
10
Ranking Based On Selection: 10
Janice Pogue
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
162,659
51,854
0.319
Evidence-based strategies to optimize the conduct of clinical research studies
* Total Citation Counts Rankings
Rankings
1,451
Canada
59
11
Ranking Based On Selection: 11
Jeff Healey
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
148,484
59,070
0.398
* Total Citation Counts Rankings
Rankings
1,483
Canada
60
12
Ranking Based On Selection: 12
Henry A Giroux
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
147,184
39,956
0.271
higher education
youth studies
social theory
critical pedagogy
cultural studies
* Total Citation Counts Rankings
Rankings
1,538
Canada
62
13
Ranking Based On Selection: 13
Roman Jaeschke
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
144,315
53,221
0.369
* Total Citation Counts Rankings
Rankings
1,729
Canada
70
14
Ranking Based On Selection: 14
R Brian Haynes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
135,595
27,388
0.202
* Total Citation Counts Rankings
Rankings
1,834
Canada
74
15
Ranking Based On Selection: 15
Andrew T Olagunju
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
131,694
125,094
0.950
Psychiatric epidemiology
public mental health
global health
medical education
* Total Citation Counts Rankings
Rankings
1,927
Canada
76
16
Ranking Based On Selection: 16
Hertzel Gerstein
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
128,225
39,704
0.310
diabetes
dysglycemia
clinical trials
cardiovascular
* Total Citation Counts Rankings
Rankings
2,173
Canada
82
17
Ranking Based On Selection: 17
Ben Bolker
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
120,066
90,101
0.750
ecology
evolution
epidemiology
statistics
theoretical biology
* Total Citation Counts Rankings
Rankings
2,404
Canada
87
18
Ranking Based On Selection: 18
James Douketis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
113,973
36,380
0.319
perioperative antithrombotic management
venous thromboembolism
anticoagulant therapy
* Total Citation Counts Rankings
Rankings
2,444
Canada
92
19
Ranking Based On Selection: 19
Joseph Beyene
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
112,892
49,436
0.438
Biostatistical modelling
statistical genomics
meta-analysis
* Total Citation Counts Rankings
Rankings
2,700
Canada
103
20
Ranking Based On Selection: 20
Robby Nieuwlaat
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107,616
48,802
0.453
Clinical Epidemiology
Guidelines
Systematic Reviews
Knowledge Translation
* Total Citation Counts Rankings
Rankings
2,701
Canada
104
21
Ranking Based On Selection: 21
Clive Kearon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107,614
34,856
0.324
clinical thromboembolism
* Total Citation Counts Rankings
Rankings
2,752
Canada
109
22
Ranking Based On Selection: 22
Jeffrey Weitz
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
106,596
42,620
0.400
* Total Citation Counts Rankings
Rankings
3,198
Canada
119
23
Ranking Based On Selection: 23
Jan Brozek
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
98,602
64,821
0.657
clinical practice guidelines
systematic reviews
allergy
* Total Citation Counts Rankings
Rankings
3,468
Canada
134
24
Ranking Based On Selection: 24
Stephen Walter
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
94,826
26,627
0.281
Statistics
Biostatistics
clinical epidemiology
public health
* Total Citation Counts Rankings
Rankings
3,646
Canada
142
25
Ranking Based On Selection: 25
Mark Crowther
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
92,148
32,172
0.349