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United States Find a Professional 2025

Find a Professional: Explore Experts Across 197 Disciplines in 220 Countries! Looking for the top professional in your field, anywhere in the world or your region? Discover our comprehensive directory of experts in engineering, medicine, law, business, arts, and more. Whether you need an architect, doctor, psychologist, mechanical engineer, economist, or lawyer, find the right professional ranked by excellence across 197 disciplines. Start your search today and connect with the best in their fields across 220 countries! Our Premium members gain greater visibility in the directory, ranking higher in search results and reaching a broader audience. With these advantages, you can: Secure more job and client opportunities, Stand out in your field and build a trusted professional image, Connect more easily with potential business partners and professionals. Stand out, make an impact, and seize opportunities! Highlight your expertise, increase your recognition in the industry, and connect with more opportunities by upgrading to Premium today. With Premium membership, you can rise above the competition and take one step closer to success! Upgrade to Premium Now and Showcase Yourself to the World!

* Total H IndexRankings
Ranking Based On Selection :1
John PA Ioannidis
meta-research
clinical epidemiology
evidence-based medicine
research methods
meta-analysis
Metrics
H-Index
i10 Index
Citation Counts
262
1,339
586,885
* Total H IndexRankings
Ranking Based On Selection :2
Arthur W Toga
neuroscience
neuroimaging
informatics
Metrics
H-Index
i10 Index
Citation Counts
197
1,009
164,484
* Total H IndexRankings
Ranking Based On Selection :3
Yuehe Lin
biosensors
bioengineering
Chemistry
Nanotechnology
Energy
Metrics
H-Index
i10 Index
Citation Counts
155
560
90,210
* Total H IndexRankings
Ranking Based On Selection :4
Rohit Loomba
MASLD
fatty liver
NASH
cirrhosis
liver disease
Metrics
H-Index
i10 Index
Citation Counts
140
558
84,243
* Total H IndexRankings
Ranking Based On Selection :5
Deanna M Barch
Schizophrenia
Depression
Cognitve and Affective Neuroscience
Metrics
H-Index
i10 Index
Citation Counts
138
547
105,093
* Total H IndexRankings
Ranking Based On Selection :7
David Sanders
Infrared Galaxies
Starbursts
Quasars
Galaxy Evolution
Metrics
H-Index
i10 Index
Citation Counts
138
423
75,586
* Total H IndexRankings
Ranking Based On Selection :8
Ted R Miller
Health economics
cost-benefit analysis
program evaluation
injury
health planning & policy
Metrics
H-Index
i10 Index
Citation Counts
134
381
242,568
* Total H IndexRankings
Ranking Based On Selection :9
William Douglas Figg, Sr
Pharmacology
Oncology
Pharmacokinetics
Pharmacogenetics
Clinical Pharmacology
Metrics
H-Index
i10 Index
Citation Counts
131
678
63,413
* Total H IndexRankings
Ranking Based On Selection :10
Ralph A Nixon
Neurodegenerative disease
Metrics
H-Index
i10 Index
Citation Counts
124
303
67,736
* Total H IndexRankings
Ranking Based On Selection :11
Howard Mcleod
personalized medicine
cancer
genomics
Pharmacogenomics
Metrics
H-Index
i10 Index
Citation Counts
122
503
56,790
* Total H IndexRankings
Ranking Based On Selection :12
Thomas H. Davenport
analytics
business analytics
information systems
business process management
artificial intelligence
Metrics
H-Index
i10 Index
Citation Counts
114
405
148,038
* Total H IndexRankings
Ranking Based On Selection :13
George Pappas
Control theory
automatic control
robotics
formal methods
cyber-physical systems
Metrics
H-Index
i10 Index
Citation Counts
111
474
48,955
* Total H IndexRankings
Ranking Based On Selection :14
Florentin Smarandache
Neutrosophic Statistics
Plithogenic Set
NeutroAlgebra & AntiAlgebra
NeutroGeometry & AntiGeometry
HyperSoft Set & IndetermSo
Metrics
H-Index
i10 Index
Citation Counts
103
783
61,592
* Total H IndexRankings
Ranking Based On Selection :15
Scot E Dowd
Molecular Biology and next generation sequencing
Metrics
H-Index
i10 Index
Citation Counts
100
269
38,676
* Total H IndexRankings
Ranking Based On Selection :16
Casper C Hoogenraad
cell biology
neuroscience
cytoskeleton
trafficking
Metrics
H-Index
i10 Index
Citation Counts
96
214
30,760
* Total H IndexRankings
Ranking Based On Selection :17
Rajiv Chowdhury
Epidemiology
Global Public Health
Low and middle income countries
Non-communicable Diseases
COVID-19
Metrics
H-Index
i10 Index
Citation Counts
83
117
112,276
* Total H IndexRankings
Ranking Based On Selection :18
Jeffrey R Stout
Dietary Supplements
Kinesiology
Exercise Physiology
Ergogenic Aids
Sarcopenia
Metrics
H-Index
i10 Index
Citation Counts
80
297
27,507
* Total H IndexRankings
Ranking Based On Selection :19
Is Jawahir
Manufacturing Processes
Sustainable Manufacturing
Sustainable Product Design
Machining
Surface Integrity
Metrics
H-Index
i10 Index
Citation Counts
73
245
21,862
* Total H IndexRankings
Ranking Based On Selection :20
Ravindranath Duggirala
Genetic Epidemiology of Complex Diseases
Human Genetics/Genomics
Diabetes/Obesity
Minority Health
Metrics
H-Index
i10 Index
Citation Counts
71
196
28,452
* Total H IndexRankings
Ranking Based On Selection :21
Breno Satler Diniz
Geriatric Psychiatry
Biomarkers
Geroscience
Aging
Clinical Neuroscience
Metrics
H-Index
i10 Index
Citation Counts
63
138
13,825
* Total H IndexRankings
Ranking Based On Selection :22
Srinivas (Sri) Talluri|Srinivas Talluri
Supply Chain Risk
Sustainable Operations
Buyer-Supplier Relationships
Supply Contracts
Metrics
H-Index
i10 Index
Citation Counts
61
109
16,232
* Total H IndexRankings
Ranking Based On Selection :23
Alfred D. French
carbohydrate structure diffraction modeling
Metrics
H-Index
i10 Index
Citation Counts
61
157
15,168
* Total H IndexRankings
Ranking Based On Selection :24
Maribel Guerrero
Entrepreneurial university
Entrepreneurship
Academic Entrepreneurship
Technology Transfer
Policy
Metrics
H-Index
i10 Index
Citation Counts
56
135
17,341
* Total H IndexRankings
Ranking Based On Selection :25
Jay Rappaport
infectious diseases
HIV
aging
comorbid conditions
therapeutics
Metrics
H-Index
i10 Index
Citation Counts
56
128
10,298
* Total H Index Rankings
Rankings
Ranking Based On Selection: 1
John PA Ioannidis
Metrics
H-Index
i10-Index
Citation Counts
262
1,339
586,885
meta-research
clinical epidemiology
evidence-based medicine
research methods
meta-analysis
* Total H Index Rankings
Rankings
Ranking Based On Selection: 2
Arthur W Toga
Metrics
H-Index
i10-Index
Citation Counts
197
1,009
164,484
* Total H Index Rankings
Rankings
Ranking Based On Selection: 3
Yuehe Lin
Metrics
H-Index
i10-Index
Citation Counts
155
560
90,210
biosensors
bioengineering
Chemistry
Nanotechnology
Energy
* Total H Index Rankings
Rankings
Ranking Based On Selection: 4
Rohit Loomba
Metrics
H-Index
i10-Index
Citation Counts
140
558
84,243
* Total H Index Rankings
Rankings
Ranking Based On Selection: 5
Deanna M Barch
Metrics
H-Index
i10-Index
Citation Counts
138
547
105,093
Schizophrenia
Depression
Cognitve and Affective Neuroscience
* Total H Index Rankings
Rankings
Ranking Based On Selection: 6
Gary Lyman
Metrics
H-Index
i10-Index
Citation Counts
138
551
97,730
* Total H Index Rankings
Rankings
Ranking Based On Selection: 7
David Sanders
Metrics
H-Index
i10-Index
Citation Counts
138
423
75,586
Infrared Galaxies
Starbursts
Quasars
Galaxy Evolution
* Total H Index Rankings
Rankings
Ranking Based On Selection: 8
Ted R Miller
Metrics
H-Index
i10-Index
Citation Counts
134
381
242,568
Health economics
cost-benefit analysis
program evaluation
injury
health planning & policy
* Total H Index Rankings
Rankings
Ranking Based On Selection: 9
William Douglas Figg, Sr
Metrics
H-Index
i10-Index
Citation Counts
131
678
63,413
Pharmacology
Oncology
Pharmacokinetics
Pharmacogenetics
Clinical Pharmacology
* Total H Index Rankings
Rankings
Ranking Based On Selection: 10
Ralph A Nixon
Metrics
H-Index
i10-Index
Citation Counts
124
303
67,736
* Total H Index Rankings
Rankings
Ranking Based On Selection: 11
Howard Mcleod
Metrics
H-Index
i10-Index
Citation Counts
122
503
56,790
* Total H Index Rankings
Rankings
Ranking Based On Selection: 12
Thomas H. Davenport
Metrics
H-Index
i10-Index
Citation Counts
114
405
148,038
analytics
business analytics
information systems
business process management
artificial intelligence
* Total H Index Rankings
Rankings
Ranking Based On Selection: 13
George Pappas
Metrics
H-Index
i10-Index
Citation Counts
111
474
48,955
Control theory
automatic control
robotics
formal methods
cyber-physical systems
* Total H Index Rankings
Rankings
Ranking Based On Selection: 14
Florentin Smarandache
Metrics
H-Index
i10-Index
Citation Counts
103
783
61,592
Neutrosophic Statistics
Plithogenic Set
NeutroAlgebra & AntiAlgebra
NeutroGeometry & AntiGeometry
HyperSoft Set & IndetermSo
* Total H Index Rankings
Rankings
Ranking Based On Selection: 15
Scot E Dowd
Metrics
H-Index
i10-Index
Citation Counts
100
269
38,676
* Total H Index Rankings
Rankings
Ranking Based On Selection: 16
Casper C Hoogenraad
Genentech, Inc South San Francisco, United States United States
Metrics
H-Index
i10-Index
Citation Counts
96
214
30,760
cell biology
neuroscience
cytoskeleton
trafficking
* Total H Index Rankings
Rankings
Ranking Based On Selection: 17
Rajiv Chowdhury
Metrics
H-Index
i10-Index
Citation Counts
83
117
112,276
Epidemiology
Global Public Health
Low and middle income countries
Non-communicable Diseases
COVID-19
* Total H Index Rankings
Rankings
Ranking Based On Selection: 18
Jeffrey R Stout
Metrics
H-Index
i10-Index
Citation Counts
80
297
27,507
Dietary Supplements
Kinesiology
Exercise Physiology
Ergogenic Aids
Sarcopenia
* Total H Index Rankings
Rankings
Ranking Based On Selection: 19
Is Jawahir
Metrics
H-Index
i10-Index
Citation Counts
73
245
21,862
Manufacturing Processes
Sustainable Manufacturing
Sustainable Product Design
Machining
Surface Integrity
* Total H Index Rankings
Rankings
Ranking Based On Selection: 20
Ravindranath Duggirala
Metrics
H-Index
i10-Index
Citation Counts
71
196
28,452
Genetic Epidemiology of Complex Diseases
Human Genetics/Genomics
Diabetes/Obesity
Minority Health
* Total H Index Rankings
Rankings
Ranking Based On Selection: 21
Breno Satler Diniz
Metrics
H-Index
i10-Index
Citation Counts
63
138
13,825
Geriatric Psychiatry
Biomarkers
Geroscience
Aging
Clinical Neuroscience
* Total H Index Rankings
Rankings
Ranking Based On Selection: 22
Srinivas (Sri) Talluri|Srinivas Talluri
Metrics
H-Index
i10-Index
Citation Counts
61
109
16,232
Supply Chain Risk
Sustainable Operations
Buyer-Supplier Relationships
Supply Contracts
* Total H Index Rankings
Rankings
Ranking Based On Selection: 23
Alfred D. French
Metrics
H-Index
i10-Index
Citation Counts
61
157
15,168
carbohydrate structure diffraction modeling
* Total H Index Rankings
Rankings
Ranking Based On Selection: 24
Maribel Guerrero
Metrics
H-Index
i10-Index
Citation Counts
56
135
17,341
Entrepreneurial university
Entrepreneurship
Academic Entrepreneurship
Technology Transfer
Policy
* Total H Index Rankings
Rankings
Ranking Based On Selection: 25
Jay Rappaport
Metrics
H-Index
i10-Index
Citation Counts
56
128
10,298
infectious diseases
HIV
aging
comorbid conditions
therapeutics