Productivity Rankings is an exclusive service provided by AD Scientific Index. This ranking system, derived from the i10 index, highlights the productivity of scientists in publishing impactful scientific articles. Productivity Rankings serves as a tool to identify highly productive scientists across specific areas, disciplines, universities, and countries, and supports the creation of effective incentives and academic policies. The global, regional, and institutional rankings of scientists in this table are calculated based on their total i10 index. Moreover, you can explore special rankings derived from Productivity Rankings, such as Scientists Last 6 Years' i10 Index, Universities Total i10 Index Rankings 2025, Universities Last 6 Years' i10 Index Rankings 2025, Art and Humanities i10 Productivity Rankings, and Social Sciences and Humanities i10 Productivity Rankings.
* Total i10 IndexRankings
Ranking Based On Selection: 1
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
588
364
0.619
* Total i10 IndexRankings
Ranking Based On Selection: 2
Health Economics
Public Health
Health Policy and Systems Research
Pharmaco-economics
Pharmaco-epidemiology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
281
220
0.783
* Total i10 IndexRankings
Ranking Based On Selection: 3
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
261
91
0.349
* Total i10 IndexRankings
Ranking Based On Selection: 4
Public Health
Health Systems and Policy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
171
135
0.789
* Total i10 IndexRankings
Ranking Based On Selection: 5
Ethnopharmacology
Natural Products Pharmacology
Autonomic Pharmacology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
144
92
0.639
* Total i10 IndexRankings
Ranking Based On Selection: 6
Pharmaceutics
drug delivery
nanotechnology/nanomedicines
pharmaceutical microbiology & biotechnology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
131
89
0.679
* Total i10 IndexRankings
Ranking Based On Selection: 7
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
123
102
0.829
* Total i10 IndexRankings
Ranking Based On Selection: 8
Natural Products Pharmacology & Toxicology
Immunopharmacology
Biological Response Modifiers
Vaccine adjuvants
Infectious Dis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
59
0.728
* Total i10 IndexRankings
Ranking Based On Selection: 9
Pharmaceutics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
78
32
0.410
* Total i10 IndexRankings
Ranking Based On Selection: 10
Paediatric Haematology and Oncology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
54
0.711
* Total i10 IndexRankings
Ranking Based On Selection: 11
pediatrics
infectious diseases
implementation science
HIV
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
72
67
0.931
* Total i10 IndexRankings
Ranking Based On Selection: 12
Pathology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
69
2
0.029
* Total i10 IndexRankings
Ranking Based On Selection: 13
Paediatric cardiology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
52
0.788
* Total i10 IndexRankings
Ranking Based On Selection: 14
Inorganic Chemistry
Thermal behaviour of complexes
Water treatment and adsorption
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
40
0.606
* Total i10 IndexRankings
Ranking Based On Selection: 15
Natural Product Pharmacology & Toxicology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
33
0.532
* Total i10 IndexRankings
Ranking Based On Selection: 16
Reproductive Endocrinology and Infertility
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
26
0.419
* Total i10 IndexRankings
Ranking Based On Selection: 17
Nephrology
Cardio-metabolic syndrome
Transplant Science
Clinical Trials
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
49
0.817
* Total i10 IndexRankings
Ranking Based On Selection: 18
Natural Products Research
Medicinal Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
40
0.667
* Total i10 IndexRankings
Ranking Based On Selection: 19
Urogynaecology and pelvic reconstruction
Feto-Maternal health
infertility
infectious diseases in
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
58
51
0.879
* Total i10 IndexRankings
Ranking Based On Selection: 20
Maternal Fetal Medicine
Gynecological Oncology
Reproductive Endocrinology and Infertility
Gynecological Urology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
58
28
0.483
* Total i10 IndexRankings
Ranking Based On Selection: 21
Nephrology
Malaria in children
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
37
0.649
* Total i10 IndexRankings
Ranking Based On Selection: 22
Infertility
Reproductive physiology and HIV research
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
35
0.614
* Total i10 IndexRankings
Ranking Based On Selection: 23
Hysteroscopy/IVF/Fertility and family planning
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
31
0.544
* Total i10 IndexRankings
Ranking Based On Selection: 24
Animal Nutrition
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
30
0.526
* Total i10 IndexRankings
Ranking Based On Selection: 25
hematology oncology HIV/AIDS
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
55
33
0.600
Luis Miguel Cardoso
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
588
364
0.619
Obinna E. Onwujekwe
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
281
220
0.783
Health Economics
Public Health
Health Policy and Systems Research
Pharmaco-economics
Pharmaco-epidemiology
Ryo Takahashi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
261
91
0.349
Benjamin Uzochukwu
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
171
135
0.789
Public Health
Health Systems and Policy
Peter A. Akah
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
144
92
0.639
Ethnopharmacology
Natural Products Pharmacology
Autonomic Pharmacology
Anthony Attama
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
131
89
0.679
Pharmaceutics
drug delivery
nanotechnology/nanomedicines
pharmaceutical microbiology & biotechnology
Abdulsalam Abdullahi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
123
102
0.829
Chukwuemeka S. Nworu
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
59
0.728
Natural Products Pharmacology & Toxicology
Immunopharmacology
Biological Response Modifiers
Vaccine adjuvants
Infectious Dis
Michael Adikwu
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
78
32
0.410
Anthony N. Ikefuna
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
54
0.711
Paediatric Haematology and Oncology
Echezona E. Ezeanolue
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
72
67
0.931
pediatrics
infectious diseases
implementation science
HIV
Wilson Onuigbo
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
69
2
0.029
Josephat Chinawa
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
52
0.788
Paediatric cardiology
Ahmed A. Atia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
40
0.606
Inorganic Chemistry
Thermal behaviour of complexes
Water treatment and adsorption
Isaac Asuzu
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
33
0.532
Natural Product Pharmacology & Toxicology
HE Onah
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
26
0.419
Reproductive Endocrinology and Infertility
Ifeoma Ulasi
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
49
0.817
Nephrology
Cardio-metabolic syndrome
Transplant Science
Clinical Trials
Patience Osadebe
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
40
0.667
Natural Products Research
Medicinal Chemistry
Emmanuel Onyebuchi Valentine Ugwu
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
58
51
0.879
Urogynaecology and pelvic reconstruction
Feto-Maternal health
infertility
infectious diseases in
Benjamin Ozumba
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
58
28
0.483
Maternal Fetal Medicine
Gynecological Oncology
Reproductive Endocrinology and Infertility
Gynecological Urology
Henrietta Okafor
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
37
0.649
Nephrology
Malaria in children
Samuel Obi
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
35
0.614
Infertility
Reproductive physiology and HIV research
Hyginus Uzo. Ezegwui
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
31
0.544
Hysteroscopy/IVF/Fertility and family planning
Augustine Ogbonna Ani
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
30
0.526
Ifeoma Emodi
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
55
33
0.600
hematology oncology HIV/AIDS