i10 Productivity
Rankings

US Environmental Protection Agency/ 481 Scientists i10 Productivity Rankings - 2025

Total 2,384,773 scientists, country 221, and institutions 24,456 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:

  • Gain full access to detailed comparisons and advanced analytics,
  • Objectively evaluate your academic productivity,
  • Make strategic, data-driven decisions to enhance performance.

* Total i10 IndexRankings
Ranking Based On Selection: 1
United States
Andrew Ghio
Lung diseases
iron homeostasis
fibers
particles
air pollution
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
291
157
0.540
* Total i10 IndexRankings
Ranking Based On Selection: 2
United States
Antony John Williams
Chemistry
Cheminformatics
Nuclear Magnetic Resonance
Drug Discovery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
265
143
0.540
* Total i10 IndexRankings
Ranking Based On Selection: 3
United States
Mallikarjuna Nadagouda
Nanotechnology
Materials Chemistry
Water Reserach
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
228
186
0.816
* Total i10 IndexRankings
Ranking Based On Selection: 4
United States
Richard Judson
Toxicology
bioinformatics
Computational Toxicology
Systems Biology
Endocrine Disruption
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
196
149
0.760
* Total i10 IndexRankings
Ranking Based On Selection: 5
United States
Kirk G Scheckel
Environmental Soil Chemistry
Synchrotron Techniques
Bioavailability
Nanoparticles in the Environment
Plant Uptake
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
192
163
0.849
* Total i10 IndexRankings
Ranking Based On Selection: 7
United States
Grace Patlewicz
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
152
103
0.678
* Total i10 IndexRankings
Ranking Based On Selection: 8
United States
Brian Gullett
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
148
82
0.554
* Total i10 IndexRankings
Ranking Based On Selection: 9
United States
Jia Xing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
145
140
0.966
* Total i10 IndexRankings
Ranking Based On Selection: 10
United States
Mace G Barron
aquatic toxicology
oil
bioaccumulation
pharmacokinetics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
134
83
0.619

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* Total i10 IndexRankings
Ranking Based On Selection: 11
United States
Jorge W Santo Domingo
Molecular Microbial Ecology
drinking water
microbial ecology
environmental microbiology
water
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
131
93
0.710
* Total i10 IndexRankings
Ranking Based On Selection: 12
United States
Thomas B Knudsen
developmental biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
130
75
0.577
* Total i10 IndexRankings
Ranking Based On Selection: 13
United States
Rory Conolly
Mechanisms of dose-response
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
129
36
0.279
* Total i10 IndexRankings
Ranking Based On Selection: 14
United States
Jay Garland
environmental microbiology
microbial ecology
regenerative system design
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
125
62
0.496
* Total i10 IndexRankings
Ranking Based On Selection: 15
United States
M Ian Gilmour
air pollution immunology host defence
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
118
65
0.551
* Total i10 IndexRankings
Ranking Based On Selection: 16
United States
Keith A Houck
environmental toxicology
drug discovery
nuclear receptors
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
114
92
0.807
* Total i10 IndexRankings
Ranking Based On Selection: 17
United States
Ann M Richard
Computational chemistry
cheminformatics
toxicology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
113
71
0.628
* Total i10 IndexRankings
Ranking Based On Selection: 18
United States
Michael Devito
toxicology
pharmacokinetics
thyroid
PFAS
dioxins
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
112
63
0.563
* Total i10 IndexRankings
Ranking Based On Selection: 19
United States
John M Rogers
Developmental and Reproductive Toxicology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
110
29
0.264
* Total i10 IndexRankings
Ranking Based On Selection: 21
United States
Endalkachew Sahle-Demessie
Nanotechnolgy
water pollution
green chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
108
62
0.574
* Total i10 IndexRankings
Ranking Based On Selection: 22
United States
Mark G Johnson
soils
roots
biochar
contaminated soil remediation
nanomaterials
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
108
58
0.537
* Total i10 IndexRankings
Ranking Based On Selection: 23
United States
Stephanie Padilla
neurotoxicology
developmental toxicology
chemical screening
zebrafish
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
108
46
0.426
* Total i10 IndexRankings
Ranking Based On Selection: 24
United States
James Wickham
Environment
landscape ecology
remote sensing
GIS
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
104
62
0.596
* Total i10 IndexRankings
Ranking Based On Selection: 25
United States
R Woodrow Setzer
biostatistics
dose-response
pharmacokinetics
high throughput screening
quantitative risk assessment
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
104
60
0.577
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 1
Andrew Ghio
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
291
157
0.540
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 2
Antony John Williams
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
265
143
0.540
Chemistry
Cheminformatics
Nuclear Magnetic Resonance
Drug Discovery
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 3
Mallikarjuna Nadagouda
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
228
186
0.816
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 4
Richard Judson
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
196
149
0.760
Toxicology
bioinformatics
Computational Toxicology
Systems Biology
Endocrine Disruption
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 5
Kirk G Scheckel
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
192
163
0.849
Environmental Soil Chemistry
Synchrotron Techniques
Bioavailability
Nanoparticles in the Environment
Plant Uptake
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 6
Russell S Thomas
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
170
119
0.700
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 7
Grace Patlewicz
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
152
103
0.678
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 8
Brian Gullett
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
148
82
0.554
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 9
Jia Xing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
145
140
0.966
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 10
Mace G Barron
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
134
83
0.619
aquatic toxicology
oil
bioaccumulation
pharmacokinetics

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 11
Jorge W Santo Domingo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
131
93
0.710
Molecular Microbial Ecology
drinking water
microbial ecology
environmental microbiology
water
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 12
Thomas B Knudsen
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
130
75
0.577
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 13
Rory Conolly
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
129
36
0.279
Mechanisms of dose-response
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 14
Jay Garland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
125
62
0.496
environmental microbiology
microbial ecology
regenerative system design
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 15
M Ian Gilmour
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
118
65
0.551
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 16
Keith A Houck
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
114
92
0.807
environmental toxicology
drug discovery
nuclear receptors
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 17
Ann M Richard
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
113
71
0.628
Computational chemistry
cheminformatics
toxicology
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 18
Michael Devito
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
112
63
0.563
toxicology
pharmacokinetics
thyroid
PFAS
dioxins
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 19
John M Rogers
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
110
29
0.264
Developmental and Reproductive Toxicology
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 20
James Lazorchak
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
109
54
0.495
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 21
Endalkachew Sahle-Demessie
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
108
62
0.574
Nanotechnolgy
water pollution
green chemistry
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 22
Mark G Johnson
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
108
58
0.537
soils
roots
biochar
contaminated soil remediation
nanomaterials
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 23
Stephanie Padilla
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
108
46
0.426
neurotoxicology
developmental toxicology
chemical screening
zebrafish
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 24
James Wickham
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
104
62
0.596
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 25
R Woodrow Setzer
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
104
60
0.577
biostatistics
dose-response
pharmacokinetics
high throughput screening
quantitative risk assessment