Citation Rankings
Highly Cited Researchers
Okayama University Highly Cited Researchers Citation Medical and Health Sciences Rankings 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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
Plant hormones
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,125
5,022
0.414
* Total Citation Counts Rankings
Ranking Based On Selection :2
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,944
2,855
0.287
* Total Citation Counts Rankings
Ranking Based On Selection :3
Osteoarthritis
Rheumatoid arthritis
Orthopaedics
Hand surgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,225
2,338
0.324
* Total Citation Counts Rankings
Ranking Based On Selection :4
bacteriology
virulence
silkworm
insect
infection
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,779
1,747
0.302
* Total Citation Counts Rankings
Ranking Based On Selection :5
Brain Tumor
Gene Therapy
Targeted Drug
Skull Base
Endoscopy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,706
1,992
0.349
* Total Citation Counts Rankings
Ranking Based On Selection :6
Endoscopy
Gastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,534
2,516
0.455
* Total Citation Counts Rankings
Ranking Based On Selection :7
Biophysics
Photobiology
Photochemistry
Spectroscopy
Optogenetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,178
1,677
0.401
* Total Citation Counts Rankings
Ranking Based On Selection :8
epidemiology
causal inference
social science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,758
1,761
0.469
* Total Citation Counts Rankings
Ranking Based On Selection :9
Oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,918
1,750
0.600
* Total Citation Counts Rankings
Ranking Based On Selection :10
Gynecological pathology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,724
1,373
0.504
* Total Citation Counts Rankings
Ranking Based On Selection :11
photosynthesis
plant physiology
biochemistry
biophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,460
1,704
0.693
* Total Citation Counts Rankings
Ranking Based On Selection :12
Thoracic Surgery
Lung cancer
Lung Transplantation
Patient safety
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,344
1,123
0.479
* Total Citation Counts Rankings
Ranking Based On Selection :13
Neuroscience
Drug Development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,145
882
0.411
* Total Citation Counts Rankings
Ranking Based On Selection :14
Medicinal Chemistry
Nuclear Receptors
RXR
PET imaging
BNCT
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,050
1,126
0.549
* Total Citation Counts Rankings
Ranking Based On Selection :15
organ-on-a-chip
ischemia-reperfusion injury
space medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,972
896
0.454
* Total Citation Counts Rankings
Ranking Based On Selection :16
Biophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,416
961
0.679
* Total Citation Counts Rankings
Ranking Based On Selection :17
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,351
609
0.451
* Total Citation Counts Rankings
Ranking Based On Selection :18
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,254
918
0.732
* Total Citation Counts Rankings
Ranking Based On Selection :19
General Internal Medicine
Epidemiology
Pharmacology
Castleman disease
Physician well-being
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,216
1,166
0.959
* Total Citation Counts Rankings
Ranking Based On Selection :20
Immunology
Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,037
321
0.310
* Total Citation Counts Rankings
Ranking Based On Selection :21
Endocrinology Cell Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,015
300
0.296
* Total Citation Counts Rankings
Ranking Based On Selection :22
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
984
735
0.747
* Total Citation Counts Rankings
Ranking Based On Selection :23
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
861
780
0.906
* Total Citation Counts Rankings
Ranking Based On Selection :24
Cognitive Neuroscience
Somatosensory
High filed fMRI
Neuroimaging
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
860
600
0.698
* Total Citation Counts Rankings
Ranking Based On Selection :25
Animal Ecology
Behavioral Ecology
Evolutionary Ecology
Community Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
836
529
0.633
* Total Citation Counts Rankings
Rankings
76,078
1,294
1
Ranking Based On Selection: 1
Ken Ichiro Hayashi
Okayama University of Science
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,125
5,022
0.414
* Total Citation Counts Rankings
Rankings
96,424
1,745
14
Ranking Based On Selection: 2
Keiji Naruse
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,944
2,855
0.287
* Total Citation Counts Rankings
Rankings
137,691
2,673
24
Ranking Based On Selection: 3
Keiichiro Nishida
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,225
2,338
0.324
Osteoarthritis
Rheumatoid arthritis
Orthopaedics
Hand surgery
* Total Citation Counts Rankings
Rankings
173,323
3,451
34
Ranking Based On Selection: 4
Chikara Kaito
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,779
1,747
0.302
bacteriology
virulence
silkworm
insect
infection
* Total Citation Counts Rankings
Rankings
175,432
3,507
36
Ranking Based On Selection: 5
Kazuhiko Kurozumi
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,706
1,992
0.349
Brain Tumor
Gene Therapy
Targeted Drug
Skull Base
Endoscopy
* Total Citation Counts Rankings
Rankings
180,841
3,640
39
Ranking Based On Selection: 6
Yoshiro Kawahara
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,534
2,516
0.455
Endoscopy
Gastroenterology
* Total Citation Counts Rankings
Rankings
236,254
4,826
56
Ranking Based On Selection: 7
Yuki Sudo
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,178
1,677
0.401
Biophysics
Photobiology
Photochemistry
Spectroscopy
Optogenetics
* Total Citation Counts Rankings
Rankings
260,045
5,305
62
Ranking Based On Selection: 8
Etsuji Suzuki
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,758
1,761
0.469
epidemiology
causal inference
social science
* Total Citation Counts Rankings
Rankings
322,106
6,622
75
Ranking Based On Selection: 9
Tadahiko Shien|Shien T
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,918
1,750
0.600
* Total Citation Counts Rankings
Rankings
340,626
6,991
79
Ranking Based On Selection: 10
Hiroyuki Yanai
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,724
1,373
0.504
* Total Citation Counts Rankings
Rankings
369,001
7,574
86
Ranking Based On Selection: 11
Ryo Nagao
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,460
1,704
0.693
photosynthesis
plant physiology
biochemistry
biophysics
* Total Citation Counts Rankings
Rankings
383,056
7,866
90
Ranking Based On Selection: 12
Yamane Masaomi
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,344
1,123
0.479
Thoracic Surgery
Lung cancer
Lung Transplantation
Patient safety
* Total Citation Counts Rankings
Rankings
409,089
8,417
95
Ranking Based On Selection: 13
Tsuyoshi Inoue
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,145
882
0.411
Neuroscience
Drug Development
* Total Citation Counts Rankings
Rankings
422,907
8,677
98
Ranking Based On Selection: 14
Hiroki Kakuta
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,050
1,126
0.549
Medicinal Chemistry
Nuclear Receptors
RXR
PET imaging
BNCT
* Total Citation Counts Rankings
Rankings
435,056
8,911
101
Ranking Based On Selection: 15
Ken Takahashi
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,972
896
0.454
organ-on-a-chip
ischemia-reperfusion injury
space medicine
* Total Citation Counts Rankings
Rankings
543,694
10,966
118
Ranking Based On Selection: 16
Yosuke Senju
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,416
961
0.679
* Total Citation Counts Rankings
Rankings
559,872
11,258
121
Ranking Based On Selection: 17
Takahiro Kataoka
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,351
609
0.451
* Total Citation Counts Rankings
Rankings
585,771
11,707
127
Ranking Based On Selection: 18
Toshiharu Mitsuhashi
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,254
918
0.732
* Total Citation Counts Rankings
Rankings
596,547
11,922
130
Ranking Based On Selection: 19
Yoshito Nishimura
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,216
1,166
0.959
General Internal Medicine
Epidemiology
Pharmacology
Castleman disease
Physician well-being
* Total Citation Counts Rankings
Rankings
653,489
12,851
138
Ranking Based On Selection: 20
Naoki Kanayama
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,037
321
0.310
* Total Citation Counts Rankings
Rankings
661,148
12,971
16
Ranking Based On Selection: 21
Mitsumori Kawaminami
Okayama University of Science
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,015
300
0.296
Endocrinology Cell Biology
* Total Citation Counts Rankings
Rankings
671,941
13,146
143
Ranking Based On Selection: 22
Muzembo Basilua Andre
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
984
735
0.747
* Total Citation Counts Rankings
Rankings
719,778
13,908
149
Ranking Based On Selection: 23
Yoshihiro Otani
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
861
780
0.906
* Total Citation Counts Rankings
Rankings
720,347
13,922
150
Ranking Based On Selection: 24
Jiajia Yang
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
860
600
0.698
Cognitive Neuroscience
Somatosensory
High filed fMRI
Neuroimaging
* Total Citation Counts Rankings
Rankings
730,626
14,093
18
Ranking Based On Selection: 25
Tomohiro Takeyama
Okayama University of Science
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
836
529
0.633
Animal Ecology
Behavioral Ecology
Evolutionary Ecology
Community Ecology