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.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :1
Osteoarthritis
Rheumatoid arthritis
Orthopaedics
Hand surgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,316
2,424
0.331
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
General Internal Medicine
Epidemiology
Pharmacology
Castleman disease
Physician well-being
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,321
1,271
0.962
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
organ-on-a-chip
ischemia-reperfusion injury
space medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,043
976
0.478
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
General Medicine
Medical Education
Fever of unknown origin
Auto-inflammatory disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
604
603
0.998
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :5
Hepatitis C virus
Hepatitis B virus
HCV
HBV
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
497
271
0.545
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :6
Tissue regeneration
Skin organoids
Biomaterilas
IPSCs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
127
111
0.874
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :7
Prosthodontic
TMD
Orofacial Pain
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
103
101
0.981
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :8
Senior Assistant Professors
Comprehensive Dental Clinic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
401
92
0.229
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :9
Cardiology
arrhythmia
electrophysiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
99
76
0.768
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
Dentistry. Endodontics. Dental Education.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69
39
0.565
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
Dentistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12
12
1.000
Keiichiro Nishida
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,316
2,424
0.331
Osteoarthritis
Rheumatoid arthritis
Orthopaedics
Hand surgery
Yoshito Nishimura
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,321
1,271
0.962
General Internal Medicine
Epidemiology
Pharmacology
Castleman disease
Physician well-being
Ken Takahashi
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,043
976
0.478
organ-on-a-chip
ischemia-reperfusion injury
space medicine
Kazuki Tokumasu
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
604
603
0.998
General Medicine
Medical Education
Fever of unknown origin
Auto-inflammatory disease
Youki Ueda
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
497
271
0.545
Hepatitis C virus
Hepatitis B virus
HCV
HBV
Mahmoud Farahat
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
127
111
0.874
Tissue regeneration
Skin organoids
Biomaterilas
IPSCs
Acing Habibie Mude
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
103
101
0.981
Prosthodontic
TMD
Orofacial Pain
Hajime Shirai
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
401
92
0.229
Senior Assistant Professors
Comprehensive Dental Clinic
Akira Ueoka
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
99
76
0.768
Cardiology
arrhythmia
electrophysiology
* Last 6 Years Citation Counts Rankings
Zulema Arias
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69
39
0.565
Dentistry. Endodontics. Dental Education.
* Last 6 Years Citation Counts Rankings
Wlla E. Al Hammad
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12
12
1.000