Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
* Total Citation Counts Rankings
World Rank
184,828
Country Rank
67,579
Institution Rank : 77
![](https://cdn.adscientificindex.com/logos/5613.jpg)
![United States](/flags/us.png)
![Laura Cassidy](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,433
2,136
0.393
* Total Citation Counts Rankings
World Rank
542,485
Country Rank
167,743
Institution Rank : 190
![](https://cdn.adscientificindex.com/logos/5613.jpg)
![United States](/flags/us.png)
![Steven A John](https://cdn.adscientificindex.com/pictures/e2/1348662.jpg)
HIV/STI prevention
public health
implementation science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,430
1,385
0.969
* Total Citation Counts Rankings
World Rank
951,974
Country Rank
263,150
Institution Rank : 304
![](https://cdn.adscientificindex.com/logos/5613.jpg)
![United States](/flags/us.png)
![Gulrayz Ahmed](https://cdn.adscientificindex.com/pictures/0b/4850713.jpg)
Public Health
Medicine
Hem/Onc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
424
352
0.830
* Total Citation Counts Rankings
World Rank
959,392
Country Rank
264,582
Institution Rank : 306
![](https://cdn.adscientificindex.com/logos/5613.jpg)
![United States](/flags/us.png)
![Naya He](/user/assets/images/profile/no-profile-photo.png)
Public health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
413
341
0.826
* Total Citation Counts Rankings
World Rank
1,781,277
Country Rank
387,028
Institution Rank : 474
![](https://cdn.adscientificindex.com/logos/5613.jpg)
![United States](/flags/us.png)
![Erica Marion](https://cdn.adscientificindex.com/pictures/a8/5631463.jpg)
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29
29
1.000
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
184,828
![United States](/flags/us.png)
67,579
![](https://cdn.adscientificindex.com/logos/5613.jpg)
77
Laura Cassidy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,433
2,136
0.393
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
542,485
![United States](/flags/us.png)
167,743
![](https://cdn.adscientificindex.com/logos/5613.jpg)
190
Steven A John
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,430
1,385
0.969
![](https://cdn.adscientificindex.com/logos/5613.jpg)
HIV/STI prevention
public health
implementation science
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
951,974
![United States](/flags/us.png)
263,150
![](https://cdn.adscientificindex.com/logos/5613.jpg)
304
Gulrayz Ahmed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
424
352
0.830
![](https://cdn.adscientificindex.com/logos/5613.jpg)
Public Health
Medicine
Hem/Onc
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
959,392
![United States](/flags/us.png)
264,582
![](https://cdn.adscientificindex.com/logos/5613.jpg)
306
Naya He
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
413
341
0.826
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,781,277
![United States](/flags/us.png)
387,028
![](https://cdn.adscientificindex.com/logos/5613.jpg)
474
Erica Marion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29
29
1.000