Citation Rankings
Highly Cited Researchers
Medical and Health Sciences / Epidemiology and Public Health Highly Cited Researchers 30 Scientists Citation Rankings - 2025
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
Health Economics
Public Health
Health Policy and Systems Research
Pharmaco-economics
Pharmaco-epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,491
49,253
0.842
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Public Health
Health Systems and Policy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,050
29,247
0.696
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Real Estate and Facilities Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,459
1,853
0.754
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Public Health
Health Economics
Health Systems Financing
Universal Health Coverage
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,457
1,385
0.564
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Health policy and systems research
public health
political economy analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,971
1,717
0.871
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Occupational health
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,902
1,023
0.538
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Public Health
Health Policy Analysis
Maternal and Child Health
Decentralization and Federalism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,421
1,087
0.765
* Total Citation Counts Rankings
Ranking Based On Selection: 8
EEpidemiology
Zoonoses
Environmental Health & Preventive Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,308
669
0.511
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,189
1,141
0.960
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Nutrition of women and children
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,103
459
0.416
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,067
556
0.521
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
841
679
0.807
* Total Citation Counts Rankings
Ranking Based On Selection: 13
public health
global health
Community medicine
Nutrition in public health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
795
569
0.716
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Health Communication
Health Promotion
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
727
450
0.619
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Epidemiology
Public Health
cancer
injury
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
714
468
0.655
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Public Health
Social and Mental Health
Health Services
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
510
287
0.563
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Public Health
Disability
Social Justice
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
449
444
0.989
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Occupational Health and Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
404
143
0.354
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Public Health
Community Nutrition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
331
201
0.607
* Total Citation Counts Rankings
Ranking Based On Selection: 20
public health
Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
193
193
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Public Health
Infectious Diseases
Antimicrobial Resistance
Health Systems Strengthening
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
175
175
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 22
public health
epidemiology
physiology
HIV medicine and health Economis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
147
75
0.510
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Public health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
123
92
0.748
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Public Health
Immunology and epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96
54
0.563
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Public Health
Nutrition
Environmental Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83
83
1.000
* Total Citation Counts Rankings
Rankings
7,983
9
1
Ranking Based On Selection: 1
Obinna E. Onwujekwe
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,491
49,253
0.842
Health Economics
Public Health
Health Policy and Systems Research
Pharmaco-economics
Pharmaco-epidemiology
* Total Citation Counts Rankings
Rankings
13,557
11
2
Ranking Based On Selection: 2
Benjamin Uzochukwu
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,050
29,247
0.696
Public Health
Health Systems and Policy
* Total Citation Counts Rankings
Rankings
385,485
593
14
Ranking Based On Selection: 3
Aliyu Ahmad
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,459
1,853
0.754
Real Estate and Facilities Management
* Total Citation Counts Rankings
Rankings
385,778
594
44
Ranking Based On Selection: 4
Chima Onoka
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,457
1,385
0.564
Public Health
Health Economics
Health Systems Financing
Universal Health Coverage
* Total Citation Counts Rankings
Rankings
453,403
837
78
Ranking Based On Selection: 5
Chinyere Mbachu
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,971
1,717
0.871
Health policy and systems research
public health
political economy analysis
* Total Citation Counts Rankings
Rankings
464,970
893
86
Ranking Based On Selection: 6
Emmanuel Nwabueze Aguwa
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,902
1,023
0.538
Occupational health
Epidemiology
* Total Citation Counts Rankings
Rankings
563,021
1,358
137
Ranking Based On Selection: 7
Enyi Etiaba
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,421
1,087
0.765
Public Health
Health Policy Analysis
Maternal and Child Health
Decentralization and Federalism
* Total Citation Counts Rankings
Rankings
592,139
1,511
151
Ranking Based On Selection: 8
John Nwanta
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,308
669
0.511
EEpidemiology
Zoonoses
Environmental Health & Preventive Medicine
* Total Citation Counts Rankings
Rankings
625,825
1,728
23
Ranking Based On Selection: 9
IBRAHIM GARBA
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,189
1,141
0.960
* Total Citation Counts Rankings
Rankings
653,080
1,900
187
Ranking Based On Selection: 10
Ngozi Nnam
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,103
459
0.416
Nutrition of women and children
* Total Citation Counts Rankings
Rankings
664,872
2,006
200
Ranking Based On Selection: 11
Chika Onwasigwe
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,067
556
0.521
* Total Citation Counts Rankings
Rankings
750,194
3,098
277
Ranking Based On Selection: 12
Aniwada Elias Chikee
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
841
679
0.807
* Total Citation Counts Rankings
Rankings
770,118
3,395
293
Ranking Based On Selection: 13
Anne Ndu
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
795
569
0.716
public health
global health
Community medicine
Nutrition in public health
* Total Citation Counts Rankings
Rankings
801,020
3,883
331
Ranking Based On Selection: 14
Ikechukwu Emmanuel Obi
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
727
450
0.619
Health Communication
Health Promotion
Epidemiology
* Total Citation Counts Rankings
Rankings
807,095
3,992
5
Ranking Based On Selection: 15
Samuel Azubuike
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
714
468
0.655
Epidemiology
Public Health
cancer
injury
* Total Citation Counts Rankings
Rankings
923,636
6,118
481
Ranking Based On Selection: 16
Osaeloka C. Ekwueme
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
510
287
0.563
Public Health
Social and Mental Health
Health Services
* Total Citation Counts Rankings
Rankings
975,533
7,086
532
Ranking Based On Selection: 17
Chinyere Onalu
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
449
444
0.989
Public Health
Disability
Social Justice
* Total Citation Counts Rankings
Rankings
1,019,467
7,953
16
Ranking Based On Selection: 18
Nurudeen Hussain
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
404
143
0.354
Occupational Health and Epidemiology
* Total Citation Counts Rankings
Rankings
1,100,053
9,562
706
Ranking Based On Selection: 19
Nne-Ola Onuoha
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
331
201
0.607
Public Health
Community Nutrition
* Total Citation Counts Rankings
Rankings
1,328,408
14,387
972
Ranking Based On Selection: 20
Success David
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
193
193
1.000
public health
Research
* Total Citation Counts Rankings
Rankings
1,370,848
15,327
1,025
Ranking Based On Selection: 21
Emmanuel Ebuka Elebesunu
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
175
175
1.000
Public Health
Infectious Diseases
Antimicrobial Resistance
Health Systems Strengthening
* Total Citation Counts Rankings
Rankings
1,448,278
17,172
1,107
Ranking Based On Selection: 22
Chinyere Okafor
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
147
75
0.510
public health
epidemiology
physiology
HIV medicine and health Economis
* Total Citation Counts Rankings
Rankings
1,522,831
18,951
37
Ranking Based On Selection: 23
Olutayo Folashade Martins
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
123
92
0.748
* Total Citation Counts Rankings
Rankings
1,623,740
21,498
1,318
Ranking Based On Selection: 24
Chima Ukaji
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96
54
0.563
Public Health
Immunology and epidemiology
* Total Citation Counts Rankings
Rankings
1,676,842
22,845
1,393
Ranking Based On Selection: 25
Amaka Harry Ononuju
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83
83
1.000
Public Health
Nutrition
Environmental Health