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
immunology
costimulation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
172,530
68,543
0.397
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,988
55,220
0.547
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Oncology
genomics
Urologic Cancer
Bladder cancer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,799
39,192
0.504
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Medical Oncology
Cancer Care Delivery
Health Policy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,180
30,282
0.438
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Radiation Oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,227
9,314
0.272
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Prostate Cancer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,516
15,842
0.537
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Medical Physics in Radiation Therapy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,653
13,464
0.487
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Radiation Oncology
Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,848
11,442
0.443
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Medical Physics
Operations Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,507
7,232
0.284
* Total Citation Counts Rankings
Ranking Based On Selection: 10
oncology
biostatistics
medical physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,261
8,162
0.384
* Total Citation Counts Rankings
Ranking Based On Selection: 11
oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,043
6,169
0.293
* Total Citation Counts Rankings
Ranking Based On Selection: 12
radiation oncology physics
imaging
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,550
2,743
0.133
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Breast cancer radiation oncology
quality of life
lymphedema
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,859
7,366
0.371
* Total Citation Counts Rankings
Ranking Based On Selection: 14
oncology
spine
artificial intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,856
9,031
0.702
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,647
5,392
0.426
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Computational epigenomics
circulating biomarkers
machine learning
genitourinary oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,352
6,282
0.509
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Medical Physics
Image Guided Radiation Therapy
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,529
5,202
0.494
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Medical Oncologist
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,158
9,896
0.974
* Total Citation Counts Rankings
Ranking Based On Selection: 19
radiation oncology
medicine
pediatrics
breast
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,178
4,888
0.533
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Cancer Immunology
Bioinformatics
Genomics
Precision Cancer Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,905
8,811
0.989
* Total Citation Counts Rankings
Ranking Based On Selection: 21
medicine
oncology
breast cancer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,775
5,489
0.626
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Oncology
Urology
Stem cell Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,581
6,332
0.738
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Radiation Oncology
DNA technology
Biophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,311
2,500
0.301
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Medical Oncology
Urologic Oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,044
7,888
0.981
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Radiation oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,486
5,693
0.760
Gordon J Freeman
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
172,530
68,543
0.397
immunology
costimulation
Michael Birrer
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,988
55,220
0.547
Joaquim Bellmunt
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,799
39,192
0.504
Oncology
genomics
Urologic Cancer
Bladder cancer
Deborah Schrag
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,180
30,282
0.438
Medical Oncology
Cancer Care Delivery
Health Policy
Anthony Zietman
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,227
9,314
0.272
Paul L Nguyen
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,516
15,842
0.537
Harald Paganetti
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,653
13,464
0.487
Medical Physics in Radiation Therapy
Raymond H Mak
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,848
11,442
0.443
Radiation Oncology
Artificial Intelligence
Thomas Bortfeld
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,507
7,232
0.284
Medical Physics
Operations Research
Andrzej Niemierko
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,261
8,162
0.384
oncology
biostatistics
medical physics
Ruben D Carrasco
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,043
6,169
0.293
George Ty Chen
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,550
2,743
0.133
radiation oncology physics
imaging
Alphonse Taghian
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,859
7,366
0.371
Breast cancer radiation oncology
quality of life
lymphedema
Joseph H Schwab
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,856
9,031
0.702
oncology
spine
artificial intelligence
David T Miyamoto
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,647
5,392
0.426
Sylvan Baca
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,352
6,282
0.509
Computational epigenomics
circulating biomarkers
machine learning
genitourinary oncology
Christopher L Williams
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,529
5,202
0.494
Medical Physics
Image Guided Radiation Therapy
Astrophysics
Kartik Sehgal
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,158
9,896
0.974
Shannon M Macdonald
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,178
4,888
0.533
radiation oncology
medicine
pediatrics
breast
Jingxin Fu
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,905
8,811
0.989
Cancer Immunology
Bioinformatics
Genomics
Precision Cancer Medicine
Otto Metzger Filho
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,775
5,489
0.626
medicine
oncology
breast cancer
Wei Li
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,581
6,332
0.738
Oncology
Urology
Stem cell Research
G Mike Makrigiorgos
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,311
2,500
0.301
Radiation Oncology
DNA technology
Biophysics
Ziad Bakouny
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,044
7,888
0.981
Medical Oncology
Urologic Oncology
Jonathan Schoenfeld
Harvard University
Cambridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,486
5,693
0.760