Citation Rankings
Highly Cited Researchers

Pan American Health Organization Highly Cited Researchers Citation Rankings 2025

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.

* Total Citation Counts Rankings
Ranking Based On Selection :1
United States
Pilar Ramon-Pardo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,135
7,967
0.872
* Total Citation Counts Rankings
Ranking Based On Selection :2
United States
Lionel Gresh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,505
5,113
0.601
* Total Citation Counts Rankings
Ranking Based On Selection :3
United States
Lenildo de Moura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,576
3,321
0.438
* Total Citation Counts Rankings
Ranking Based On Selection :4
United States
Vagner Fonseca
bioinformatics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,291
7,256
0.995
* Total Citation Counts Rankings
Ranking Based On Selection :5
United States
omar sued
HIV
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,554
4,550
0.694
* Total Citation Counts Rankings
Ranking Based On Selection :6
United States
Luis Gabriel Cuervo
Innovation
Policy
Research
Health Systems Research
Family Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,521
3,381
0.518
* Total Citation Counts Rankings
Ranking Based On Selection :7
United States
Roberto G. Melano
Antibiotic resistance - Molecular Epidemiology - Molecular Diagnostics - Clinical Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,197
2,274
0.438
* Total Citation Counts Rankings
Ranking Based On Selection :8
United States
Marco Antonio Natal Vigilato
Public Health
Epidemiology
Zoonosis
Health Diplomacy
Veterinary Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,651
2,631
0.721
* Total Citation Counts Rankings
Ranking Based On Selection :9
United States
Ramon Martinez|Ramon Martinez Piedra
Epidemiology
Public Health
Health Metrics
Data Science
Noncommunicable Diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,679
2,141
0.799
* Total Citation Counts Rankings
Ranking Based On Selection :10
United States
Cintia Lombardi
hypertension control
public health nutrition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,650
415
0.157
* Total Citation Counts Rankings
Ranking Based On Selection :11
United States
Marcelo D'Agostino
public Health
big data
open data
artificial intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,631
2,387
0.907
* Total Citation Counts Rankings
Ranking Based On Selection :12
United States
Francisco Becerra-Posada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,550
1,149
0.451
* Total Citation Counts Rankings
Ranking Based On Selection :13
United States
Evelina Chapman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,250
1,358
0.604
* Total Citation Counts Rankings
Ranking Based On Selection :14
United States
Freddy Perez
Research Infectious Diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,177
924
0.424
* Total Citation Counts Rankings
Ranking Based On Selection :15
United States
Ernesto Báscolo
Salud pública
economía de la salud
políticas de salud
sistemas_de_salud
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,928
1,214
0.630
* Total Citation Counts Rankings
Ranking Based On Selection :16
United States
Murilo Freitas Dias
Access to medicines
Quality & Safety
Regulatory Affairs
Rational Drug Use
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,738
934
0.537
* Total Citation Counts Rankings
Ranking Based On Selection :17
United States
Thiago Augusto Hernandes Rocha|Thiago Rocha, Thiago Hernandes Rocha
Healthcare analytics
GIS
Machine Learning
Health System and Services
Health policies and planning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,660
1,525
0.919
* Total Citation Counts Rankings
Ranking Based On Selection :18
United States
Leticia Franco
Parasitology
Virology
Molecular Epidemiology
Arboviruses
emerging viruses
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,632
785
0.481
* Total Citation Counts Rankings
Ranking Based On Selection :19
United States
Edviges Maristela Pituco
Saúde Animal
Doenças Infecciosas dos Animais
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,613
655
0.406
* Total Citation Counts Rankings
Ranking Based On Selection :20
United States
Ronaldo Guilherme Carvalho Scholte
Neglected Infectious Diseases
Public Health
Parasitology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,454
737
0.507
* Total Citation Counts Rankings
Ranking Based On Selection :21
United States
Camilo Cid Pedraza
Economía de la salud
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,426
906
0.635
* Total Citation Counts Rankings
Ranking Based On Selection :22
United States
Mauricio Beltran Duran
salud publica
trasplantes
chagas
hepatitis
sangre
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,144
501
0.438
* Total Citation Counts Rankings
Rankings
108,819
United States
42,790
1
Ranking Based On Selection: 1
Pilar Ramon-Pardo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,135
7,967
0.872
* Total Citation Counts Rankings
Rankings
117,908
United States
45,882
2
Ranking Based On Selection: 2
Lionel Gresh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,505
5,113
0.601
* Total Citation Counts Rankings
Rankings
134,008
United States
51,182
3
Ranking Based On Selection: 3
Lenildo de Moura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,576
3,321
0.438
* Total Citation Counts Rankings
Rankings
139,595
United States
52,961
4
Ranking Based On Selection: 4
Vagner Fonseca
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,291
7,256
0.995
* Total Citation Counts Rankings
Rankings
156,115
United States
58,245
5
Ranking Based On Selection: 5
omar sued
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,554
4,550
0.694
* Total Citation Counts Rankings
Rankings
156,945
United States
58,477
6
Ranking Based On Selection: 6
Luis Gabriel Cuervo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,521
3,381
0.518
Innovation
Policy
Research
Health Systems Research
Family Medicine
* Total Citation Counts Rankings
Rankings
196,663
United States
70,721
7
Ranking Based On Selection: 7
Roberto G. Melano
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,197
2,274
0.438
Antibiotic resistance - Molecular Epidemiology - Molecular Diagnostics - Clinical Microbiology
* Total Citation Counts Rankings
Rankings
272,506
United States
92,896
8
Ranking Based On Selection: 8
Marco Antonio Natal Vigilato
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,651
2,631
0.721
Public Health
Epidemiology
Zoonosis
Health Diplomacy
Veterinary Public Health
* Total Citation Counts Rankings
Rankings
352,673
United States
115,524
9
Ranking Based On Selection: 9
Ramon Martinez|Ramon Martinez Piedra
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,679
2,141
0.799
Epidemiology
Public Health
Health Metrics
Data Science
Noncommunicable Diseases
* Total Citation Counts Rankings
Rankings
355,749
United States
116,386
10
Ranking Based On Selection: 10
Cintia Lombardi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,650
415
0.157
* Total Citation Counts Rankings
Rankings
357,741
United States
116,964
11
Ranking Based On Selection: 11
Marcelo D'Agostino
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,631
2,387
0.907
* Total Citation Counts Rankings
Rankings
366,660
United States
119,404
12
Ranking Based On Selection: 12
Francisco Becerra-Posada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,550
1,149
0.451
* Total Citation Counts Rankings
Rankings
403,144
United States
129,339
13
Ranking Based On Selection: 13
Evelina Chapman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,250
1,358
0.604
* Total Citation Counts Rankings
Rankings
413,118
United States
132,096
14
Ranking Based On Selection: 14
Freddy Perez
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,177
924
0.424
Research Infectious Diseases
* Total Citation Counts Rankings
Rankings
451,164
United States
142,390
15
Ranking Based On Selection: 15
Ernesto Báscolo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,928
1,214
0.630
Salud pública
economía de la salud
políticas de salud
sistemas_de_salud
* Total Citation Counts Rankings
Rankings
484,645
United States
151,303
16
Ranking Based On Selection: 16
Murilo Freitas Dias
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,738
934
0.537
Access to medicines
Quality & Safety
Regulatory Affairs
Rational Drug Use
* Total Citation Counts Rankings
Rankings
500,008
United States
155,378
17
Ranking Based On Selection: 17
Thiago Augusto Hernandes Rocha|Thiago Rocha, Thiago Hernandes Rocha
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,660
1,525
0.919
Healthcare analytics
GIS
Machine Learning
Health System and Services
Health policies and planning
* Total Citation Counts Rankings
Rankings
505,825
United States
156,934
18
Ranking Based On Selection: 18
Leticia Franco
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,632
785
0.481
Parasitology
Virology
Molecular Epidemiology
Arboviruses
emerging viruses
* Total Citation Counts Rankings
Rankings
509,773
United States
157,921
19
Ranking Based On Selection: 19
Edviges Maristela Pituco
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,613
655
0.406
Saúde Animal
Doenças Infecciosas dos Animais
* Total Citation Counts Rankings
Rankings
544,957
United States
167,192
20
Ranking Based On Selection: 20
Ronaldo Guilherme Carvalho Scholte
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,454
737
0.507
* Total Citation Counts Rankings
Rankings
551,645
United States
168,913
21
Ranking Based On Selection: 21
Camilo Cid Pedraza
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,426
906
0.635
* Total Citation Counts Rankings
Rankings
629,314
United States
188,951
22
Ranking Based On Selection: 22
Mauricio Beltran Duran
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,144
501
0.438