Citation Rankings
Highly Cited Researchers

Highly Cited Researchers 57 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.

* Total Citation Counts Rankings
Ranking Based On Selection: 1
Ireland
Rp Brennan
Neuroradiology
Stroke
Carotid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97,152
37,762
0.389
* Total Citation Counts Rankings
Ranking Based On Selection: 2
United States
Gilbert L Raff
coronary artery computed tomography
CT-derived fractional flow reserve
cardiac magnetic resonance imaging
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,710
30,556
0.472
* Total Citation Counts Rankings
Ranking Based On Selection: 3
United States
David E Haines
Atrial fibrillation mechanisms
biophysics of catheter ablation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,209
8,236
0.303
* Total Citation Counts Rankings
Ranking Based On Selection: 4
United States
George A Williams
ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,942
5,529
0.213
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Ireland
Peter Conlon
kidney disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,696
4,361
0.278
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Ireland
Chris J Thompson
endocrinology
diabetes
sports medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,878
4,885
0.352
* Total Citation Counts Rankings
Ranking Based On Selection: 7
United States
Alan Koffron
Transplant and Hepatobiliary Surgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,843
2,373
0.268
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Ireland
Francesca Brett
neuroscience
oncology
dementia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,875
2,502
0.318
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Ireland
Niall Pender
Neuropsychology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,061
4,020
0.569
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Ireland
Frank Murray
gastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,773
849
0.125
* Total Citation Counts Rankings
Ranking Based On Selection: 11
United States
Barbara Ducatman
Pathology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,732
1,342
0.199
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Ireland
William Tormey
Chemical Pathology
Medicine
Pharmacology
Medical Research
Public Affairs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,548
1,680
0.257
* Total Citation Counts Rankings
Ranking Based On Selection: 13
United States
Leslie Rocher
Nephrology and transplant medicine
quality and safety
ethics and outcomes in health care
EBM
general internal medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,747
589
0.102
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Ireland
Conall O' Seaghdha
Nephrology
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,792
2,191
0.457
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Ireland
Richard Sheahan
Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,784
376
0.079
* Total Citation Counts Rankings
Ranking Based On Selection: 16
United States
Evan J Kass
Urology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,753
298
0.063
* Total Citation Counts Rankings
Ranking Based On Selection: 17
United States
Jesse C Krakauer
Endocrinology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,567
1,778
0.389
* Total Citation Counts Rankings
Ranking Based On Selection: 18
United States
Michelle F Wallace
Radiation Oncology
Oncology
Breast Cancer
Prostate Cancer
APBI
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,238
645
0.152
* Total Citation Counts Rankings
Ranking Based On Selection: 19
United States
Amr Abbas
Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,658
1,764
0.482
* Total Citation Counts Rankings
Ranking Based On Selection: 20
United States
Jannifer Stromberg
Radiation Oncology
Breast cancer
Lung Cancer
Prostate cancer
Endometrial Cancer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,602
272
0.076
* Total Citation Counts Rankings
Ranking Based On Selection: 21
United States
Stewart Graham
Metabolomics
neurological disorders
translational science
biomarkers
disease mechanisms
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,535
2,330
0.659
* Total Citation Counts Rankings
Ranking Based On Selection: 22
United States
Steven M Truscott
Clinical Chemistry
Mass Spectrometry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,519
891
0.253
* Total Citation Counts Rankings
Ranking Based On Selection: 23
United States
Antonio Ysunza
Medicine
Voice
Speech
Resonance
Craniofacial anomalies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,116
590
0.189
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Ireland
Alan Martin
Geriatric Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,958
2,041
0.690
* Total Citation Counts Rankings
Ranking Based On Selection: 25
United States
Sulaiman Bharwani
Children's diseases
pediatrics
stomach disorders
intestinal and colon disorders
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,435
520
0.214
* Total Citation Counts Rankings
Rankings
3,410
Ireland
10
1
Ranking Based On Selection: 1
Rp Brennan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97,152
37,762
0.389
* Total Citation Counts Rankings
Rankings
6,793
United States
3,205
1
Ranking Based On Selection: 2
Gilbert L Raff
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,710
30,556
0.472
coronary artery computed tomography
CT-derived fractional flow reserve
cardiac magnetic resonance imaging
* Total Citation Counts Rankings
Rankings
26,630
United States
12,175
2
Ranking Based On Selection: 3
David E Haines
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,209
8,236
0.303
Atrial fibrillation mechanisms
biophysics of catheter ablation
* Total Citation Counts Rankings
Rankings
28,629
United States
13,012
3
Ranking Based On Selection: 4
George A Williams
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,942
5,529
0.213
* Total Citation Counts Rankings
Rankings
57,508
Ireland
236
2
Ranking Based On Selection: 5
Peter Conlon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,696
4,361
0.278
* Total Citation Counts Rankings
Rankings
67,661
Ireland
280
3
Ranking Based On Selection: 6
Chris J Thompson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,878
4,885
0.352
* Total Citation Counts Rankings
Rankings
115,650
United States
45,214
4
Ranking Based On Selection: 7
Alan Koffron
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,843
2,373
0.268
* Total Citation Counts Rankings
Rankings
131,517
Ireland
607
4
Ranking Based On Selection: 8
Francesca Brett
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,875
2,502
0.318
neuroscience
oncology
dementia
* Total Citation Counts Rankings
Rankings
147,821
Ireland
680
5
Ranking Based On Selection: 9
Niall Pender
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,061
4,020
0.569
* Total Citation Counts Rankings
Rankings
154,454
Ireland
715
6
Ranking Based On Selection: 10
Frank Murray
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,773
849
0.125
* Total Citation Counts Rankings
Rankings
155,417
United States
58,080
5
Ranking Based On Selection: 11
Barbara Ducatman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,732
1,342
0.199
* Total Citation Counts Rankings
Rankings
159,890
Ireland
734
7
Ranking Based On Selection: 12
William Tormey
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,548
1,680
0.257
Chemical Pathology
Medicine
Pharmacology
Medical Research
Public Affairs
* Total Citation Counts Rankings
Rankings
182,421
United States
66,510
6
Ranking Based On Selection: 13
Leslie Rocher
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,747
589
0.102
Nephrology and transplant medicine
quality and safety
ethics and outcomes in health care
EBM
general internal medicine
* Total Citation Counts Rankings
Rankings
217,610
Ireland
1,044
8
Ranking Based On Selection: 14
Conall O' Seaghdha
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,792
2,191
0.457
* Total Citation Counts Rankings
Rankings
217,975
Ireland
1,047
9
Ranking Based On Selection: 15
Richard Sheahan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,784
376
0.079
* Total Citation Counts Rankings
Rankings
219,277
United States
77,531
7
Ranking Based On Selection: 16
Evan J Kass
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,753
298
0.063
* Total Citation Counts Rankings
Rankings
227,525
United States
80,038
8
Ranking Based On Selection: 17
Jesse C Krakauer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,567
1,778
0.389
* Total Citation Counts Rankings
Rankings
243,884
United States
84,788
9
Ranking Based On Selection: 18
Michelle F Wallace
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,238
645
0.152
Radiation Oncology
Oncology
Breast Cancer
Prostate Cancer
APBI
* Total Citation Counts Rankings
Rankings
278,012
United States
94,651
10
Ranking Based On Selection: 19
Amr Abbas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,658
1,764
0.482
* Total Citation Counts Rankings
Rankings
281,768
United States
95,729
11
Ranking Based On Selection: 20
Jannifer Stromberg
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,602
272
0.076
Radiation Oncology
Breast cancer
Lung Cancer
Prostate cancer
Endometrial Cancer
* Total Citation Counts Rankings
Rankings
286,230
United States
97,014
12
Ranking Based On Selection: 21
Stewart Graham
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,535
2,330
0.659
Metabolomics
neurological disorders
translational science
biomarkers
disease mechanisms
* Total Citation Counts Rankings
Rankings
287,419
United States
97,361
13
Ranking Based On Selection: 22
Steven M Truscott
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,519
891
0.253
* Total Citation Counts Rankings
Rankings
318,494
United States
106,129
14
Ranking Based On Selection: 23
Antonio Ysunza
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,116
590
0.189
Medicine
Voice
Speech
Resonance
Craniofacial anomalies
* Total Citation Counts Rankings
Rankings
332,336
Ireland
1,608
10
Ranking Based On Selection: 24
Alan Martin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,958
2,041
0.690
* Total Citation Counts Rankings
Rankings
387,727
United States
125,350
15
Ranking Based On Selection: 25
Sulaiman Bharwani
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,435
520
0.214
Children's diseases
pediatrics
stomach disorders
intestinal and colon disorders