Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.
* Total Citation Counts Rankings
Ranking Based On Selection: 1

Melatonin
Oxidative Stress
Neuroendocrinolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
222,363
71,571
0.322
* Total Citation Counts Rankings
Ranking Based On Selection: 2

diabete
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
172,692
31,597
0.183
* Total Citation Counts Rankings
Ranking Based On Selection: 3

Alzheimer Disease
Parkinson Disease
Oxidative Stress
Amyloid
Neuroscienc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
130,447
37,113
0.285
* Total Citation Counts Rankings
Ranking Based On Selection: 4

neuroscience
connectomics
neuroinformatics
neuroimaging
transcranial magnetic stimulatio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
125,845
38,256
0.304
* Total Citation Counts Rankings
Ranking Based On Selection: 5

pulmonary and cirtical care medicin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
102,277
35,352
0.346
* Total Citation Counts Rankings
Ranking Based On Selection: 6

melatonin
neurodegenerative disease
oxidative stress
evolutio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,517
26,286
0.339
* Total Citation Counts Rankings
Ranking Based On Selection: 7

medical mycolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,593
32,092
0.448
* Total Citation Counts Rankings
Ranking Based On Selection: 8

research methodology in psychiatry/psychology
data analysis
applied biostatistic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,116
13,074
0.214
* Total Citation Counts Rankings
Ranking Based On Selection: 9

cyber security
access control models architectures
secure cloud and IoT computin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,403
9,584
0.183
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* Total Citation Counts Rankings
Ranking Based On Selection: 10

Discrete Metallurg
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,912
5,796
0.129
* Total Citation Counts Rankings
Ranking Based On Selection: 11

Student persistence
structural equation modeling
mentoring
theoretical model of student engagemen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,832
12,439
0.284
* Total Citation Counts Rankings
Ranking Based On Selection: 12

Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,801
19,419
0.443
* Total Citation Counts Rankings
Ranking Based On Selection: 13

sociology of religion
social psychology of health and illness
sociology of family
race and ethnicit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,980
11,082
0.258
* Total Citation Counts Rankings
Ranking Based On Selection: 14

Clinical Mycology
Azole resitance Aspergillus species
Molecular typin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,602
36,082
0.847
* Total Citation Counts Rankings
Ranking Based On Selection: 15

pain
neuroscience
endodontic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,221
11,932
0.283
* Total Citation Counts Rankings
Ranking Based On Selection: 16

Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,756
9,171
0.220
* Total Citation Counts Rankings
Ranking Based On Selection: 17

BRCA tumor suppressors
DNA break repair
replication fork repair
homologous recombination
genome maintenanc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,043
11,048
0.276
* Total Citation Counts Rankings
Ranking Based On Selection: 18

image processing
biomedical engineering
medical physic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,736
9,246
0.233
* Total Citation Counts Rankings
Ranking Based On Selection: 19

Mitochondria
diabetes
kidney diseas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,572
16,254
0.421
* Total Citation Counts Rankings
Ranking Based On Selection: 20

rhodium(II) catalysis
copper(I) catalysis
diazo chemistry
metal carbenes
heterocyclic chemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,410
7,362
0.197
* Total Citation Counts Rankings
Ranking Based On Selection: 21

Mitochondria
Calcium signaling
ion channels
oxidants
medical science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,575
14,611
0.411
* Total Citation Counts Rankings
Ranking Based On Selection: 22

Periodontology
Peri-implantitis
Implantology
Implant Dentistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,601
25,962
0.822
* Total Citation Counts Rankings
Ranking Based On Selection: 23

molecular and cell biolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,145
5,593
0.186
* Total Citation Counts Rankings
Ranking Based On Selection: 24

Materials Chemistry
Organic Chemistry
Polymer Chemistry
Conjugated Polymers
Photochemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,441
7,982
0.271
* Total Citation Counts Rankings
Ranking Based On Selection: 25

Primary Care
Transformation
Tobacco Contro
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,681
7,877
0.265
Russel J Reiter
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
222,363
71,571
0.322
Melatonin
Oxidative Stress
Neuroendocrinolog
Ralph Defronzo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
172,692
31,597
0.183
George Perry
University of Texas San Antonio
San Antonio, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
130,447
37,113
0.285
Alzheimer Disease
Parkinson Disease
Oxidative Stress
Amyloid
Neuroscienc
Peter T Fox
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
125,845
38,256
0.304
neuroscience
connectomics
neuroinformatics
neuroimaging
transcranial magnetic stimulatio
Antonio Anzueto
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
102,277
35,352
0.346
pulmonary and cirtical care medicin
Dun Xian Tan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,517
26,286
0.339
melatonin
neurodegenerative disease
oxidative stress
evolutio
Thomas F Patterson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,593
32,092
0.448
Jim Mintz
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,116
13,074
0.214
research methodology in psychiatry/psychology
data analysis
applied biostatistic
Ravi Sandhu
University of Texas San Antonio
San Antonio, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,403
9,584
0.183
cyber security
access control models architectures
secure cloud and IoT computin
Robert L Whetten
University of Texas San Antonio
San Antonio, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,912
5,796
0.129
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Amaury Nora
University of Texas San Antonio
San Antonio, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,832
12,439
0.284
Student persistence
structural equation modeling
mentoring
theoretical model of student engagemen
Xianlin Han
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,801
19,419
0.443
Christopher Ellison
University of Texas San Antonio
San Antonio, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,980
11,082
0.258
sociology of religion
social psychology of health and illness
sociology of family
race and ethnicit
Hamid Badali *
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,602
36,082
0.847
Clinical Mycology
Azole resitance Aspergillus species
Molecular typin
Kenneth M Hargreaves
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,221
11,932
0.283
pain
neuroscience
endodontic
Peter Houghton
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,756
9,171
0.220
Patrick Sung
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,043
11,048
0.276
BRCA tumor suppressors
DNA break repair
replication fork repair
homologous recombination
genome maintenanc
Jack L Lancaster
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,736
9,246
0.233
image processing
biomedical engineering
medical physic
Kumar Sharma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,572
16,254
0.421
Mitochondria
diabetes
kidney diseas
Michael P Doyle
University of Texas San Antonio
San Antonio, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,410
7,362
0.197
rhodium(II) catalysis
copper(I) catalysis
diazo chemistry
metal carbenes
heterocyclic chemistr
Madesh Muniswamy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,575
14,611
0.411
Mitochondria
Calcium signaling
ion channels
oxidants
medical science
Georgios Kotsakis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,601
25,962
0.822
Periodontology
Peri-implantitis
Implantology
Implant Dentistr
Stephen E Harris
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,145
5,593
0.186
molecular and cell biolog
Kirk S Schanze
University of Texas San Antonio
San Antonio, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,441
7,982
0.271
Materials Chemistry
Organic Chemistry
Polymer Chemistry
Conjugated Polymers
Photochemistr
Carlos Roberto Jaen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,681
7,877
0.265
Primary Care
Transformation
Tobacco Contro