Citation Rankings
Highly Cited Researchers
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
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
146,563
70,997
0.484
* Total Citation Counts Rankings
Ranking Based On Selection :2
Infectious diseases
medical microbiology
epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,965
71,879
0.712
* Total Citation Counts Rankings
Ranking Based On Selection :3
psychology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
92,698
24,468
0.264
* Total Citation Counts Rankings
Ranking Based On Selection :4
Dental epidemiology and public health
dental health services research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,960
29,577
0.470
* Total Citation Counts Rankings
Ranking Based On Selection :5
Medical and Health Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,521
22,072
0.365
* Total Citation Counts Rankings
Ranking Based On Selection :6
injury
disability
quality of life
integrated care
equity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,384
33,469
0.583
* Total Citation Counts Rankings
Ranking Based On Selection :7
Rheumatology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,344
29,589
0.555
* Total Citation Counts Rankings
Ranking Based On Selection :8
Evolutionary ecology of parasitism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,730
18,821
0.371
* Total Citation Counts Rankings
Ranking Based On Selection :9
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,785
11,763
0.241
* Total Citation Counts Rankings
Ranking Based On Selection :10
medical research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,098
11,433
0.243
* Total Citation Counts Rankings
Ranking Based On Selection :11
Gout
psoriatic arthritis
outcome measurement
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,349
19,242
0.434
* Total Citation Counts Rankings
Ranking Based On Selection :12
medicinal chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,590
11,378
0.295
* Total Citation Counts Rankings
Ranking Based On Selection :13
medicine
health sciences
psychology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,604
24,889
0.662
* Total Citation Counts Rankings
Ranking Based On Selection :14
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,236
13,786
0.428
* Total Citation Counts Rankings
Ranking Based On Selection :15
alcohol
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,536
10,123
0.321
* Total Citation Counts Rankings
Ranking Based On Selection :16
tinnitus
pain
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,836
17,583
0.570
* Total Citation Counts Rankings
Ranking Based On Selection :17
Limnology
Lake Ecosystems
Fatty acids in aquatic food webs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,245
21,446
0.817
* Total Citation Counts Rankings
Ranking Based On Selection :18
Public Health
Nutrition
Chronic Disease Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,178
22,303
0.852
* Total Citation Counts Rankings
Ranking Based On Selection :19
Mathematics
Statistics and Evolutionary Genetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,793
12,473
0.484
* Total Citation Counts Rankings
Ranking Based On Selection :20
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,467
11,739
0.461
* Total Citation Counts Rankings
Ranking Based On Selection :21
intelligence
political science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,209
7,953
0.315
* Total Citation Counts Rankings
Ranking Based On Selection :22
gut microbiota
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,567
5,527
0.235
* Total Citation Counts Rankings
Ranking Based On Selection :23
stroke
neurology
health service delivery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,847
22,018
0.964
* Total Citation Counts Rankings
Ranking Based On Selection :24
neuroscience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,840
6,355
0.278
* Total Citation Counts Rankings
Ranking Based On Selection :25
Statistical analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,776
10,042
0.441
* Total Citation Counts Rankings
Rankings
1,492
7
1
Ranking Based On Selection: 1
Tony Merriman
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
146,563
70,997
0.484
* Total Citation Counts Rankings
Rankings
3,054
14
2
Ranking Based On Selection: 2
John A Crump
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,965
71,879
0.712
Infectious diseases
medical microbiology
epidemiology
* Total Citation Counts Rankings
Rankings
3,611
16
3
Ranking Based On Selection: 3
David Fergusson
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
92,698
24,468
0.264
* Total Citation Counts Rankings
Rankings
6,906
20
4
Ranking Based On Selection: 4
W Murray Thomson
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,960
29,577
0.470
Dental epidemiology and public health
dental health services research
* Total Citation Counts Rankings
Rankings
7,358
22
5
Ranking Based On Selection: 5
Simon Hales
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,521
22,072
0.365
Medical and Health Sciences
* Total Citation Counts Rankings
Rankings
7,999
24
6
Ranking Based On Selection: 6
Sarah Derrett
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,384
33,469
0.583
* Total Citation Counts Rankings
Rankings
9,033
26
7
Ranking Based On Selection: 7
Rebecca Grainger
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,344
29,589
0.555
* Total Citation Counts Rankings
Rankings
9,794
29
8
Ranking Based On Selection: 8
Robert Poulin
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,730
18,821
0.371
Evolutionary ecology of parasitism
* Total Citation Counts Rankings
Rankings
10,393
32
9
Ranking Based On Selection: 9
Crispin Gardiner
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,785
11,763
0.241
* Total Citation Counts Rankings
Rankings
10,983
33
10
Ranking Based On Selection: 10
Peter Herbison
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,098
11,433
0.243
* Total Citation Counts Rankings
Rankings
12,091
40
11
Ranking Based On Selection: 11
William J Taylor
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,349
19,242
0.434
* Total Citation Counts Rankings
Rankings
15,121
49
12
Ranking Based On Selection: 12
Robin aj smith
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,590
11,378
0.295
* Total Citation Counts Rankings
Rankings
15,738
53
13
Ranking Based On Selection: 13
Kate M Scott
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,604
24,889
0.662
medicine
health sciences
psychology
* Total Citation Counts Rankings
Rankings
20,034
65
14
Ranking Based On Selection: 14
Brett Delahunt
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,236
13,786
0.428
* Total Citation Counts Rankings
Rankings
20,746
67
15
Ranking Based On Selection: 15
Elisabeth Wells
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,536
10,123
0.321
* Total Citation Counts Rankings
Rankings
21,442
68
16
Ranking Based On Selection: 16
Dirk De Ridder
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,836
17,583
0.570
* Total Citation Counts Rankings
Rankings
27,449
87
17
Ranking Based On Selection: 17
Samiullah Khan
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,245
21,446
0.817
Limnology
Lake Ecosystems
Fatty acids in aquatic food webs
* Total Citation Counts Rankings
Rankings
27,557
88
18
Ranking Based On Selection: 18
Rachael McLean
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,178
22,303
0.852
Public Health
Nutrition
Chronic Disease Epidemiology
* Total Citation Counts Rankings
Rankings
28,164
89
19
Ranking Based On Selection: 19
David Bryant
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,793
12,473
0.484
Mathematics
Statistics and Evolutionary Genetics
* Total Citation Counts Rankings
Rankings
28,706
93
20
Ranking Based On Selection: 20
Joseph Boden
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,467
11,739
0.461
* Total Citation Counts Rankings
Rankings
29,147
96
21
Ranking Based On Selection: 21
James R Flynn
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,209
7,953
0.315
intelligence
political science
* Total Citation Counts Rankings
Rankings
32,191
107
22
Ranking Based On Selection: 22
Gerald W Tannock
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,567
5,527
0.235
* Total Citation Counts Rankings
Rankings
33,601
110
23
Ranking Based On Selection: 23
Annemarei Ranta
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,847
22,018
0.964
stroke
neurology
health service delivery
* Total Citation Counts Rankings
Rankings
33,621
111
24
Ranking Based On Selection: 24
Wickliffe Abraham
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,840
6,355
0.278
* Total Citation Counts Rankings
Rankings
33,748
112
25
Ranking Based On Selection: 25
Mark Weatherall
University of Otago
North Dunedin, New Zealand
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,776
10,042
0.441