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Lewis, Roger J.

David Geffen School of Medicine at UCLA, United States

2025 Rank: 47,729

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Emergency & Critical Care Medicine

SubField 2:

General & Internal Medicine

Rank in SubField 1: 157 out of 41,816 Researchers

Data For The Year: 2025
Metrics Self-Citations Excluded All
Rank Based on Composite Score47,72951,274
Total Cites19,05721,291
H-index5861
Hm-index2526
Number of Single Authored Papers2020
Total Cites to Single Authored Papers153165
Number of Single+First Authored Papers4242
Total Cites to Single+First Authored Papers613680
Number of Single+First+Last Authored Papers165165
Total Cites to Single+First+Last Authored Papers7,0267,361
Composite Score33
Number of Distinct Citing Papers17,27518,766
Ratio of Total Citations to Distinct Citing Papers 1.10 1.13
Self-Citation Percentage
10.49%
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Lewis, Roger J.

David Geffen School of Medicine at UCLA, United States

2024 Rank: 49,729

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Emergency & Critical Care Medicine

SubField 2:

General & Internal Medicine

Rank in SubField 1: 163 out of 39,519 Researchers

Data For The Year: 2024
Metrics Self-Citations Excluded All
Rank Based on Composite Score49,72952,647
Total Cites16,59118,556
H-index5458
Hm-index2526
Number of Single Authored Papers2121
Total Cites to Single Authored Papers148160
Number of Single+First Authored Papers4343
Total Cites to Single+First Authored Papers583649
Number of Single+First+Last Authored Papers166166
Total Cites to Single+First+Last Authored Papers6,2286,550
Composite Score33
Number of Distinct Citing Papers15,05716,390
Ratio of Total Citations to Distinct Citing Papers 1.10 1.13
Self-Citation Percentage
10.59%
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Lewis, Roger J.

Harbor-UCLA Medical Center, United States

2023 Rank: 50,941

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Emergency & Critical Care Medicine

SubField 2:

General & Internal Medicine

Rank in SubField 1: 164 out of 37,023 Researchers

Data For The Year: 2023
Metrics Self-Citations Excluded All
Rank Based on Composite Score50,94154,716
Total Cites14,07915,713
H-index5255
Hm-index2425
Number of Single Authored Papers2020
Total Cites to Single Authored Papers140152
Number of Single+First Authored Papers4141
Total Cites to Single+First Authored Papers552615
Number of Single+First+Last Authored Papers162162
Total Cites to Single+First+Last Authored Papers5,4995,804
Composite Score33
Number of Distinct Citing Papers12,81513,937
Ratio of Total Citations to Distinct Citing Papers 1.10 1.13
Self-Citation Percentage
10.40%
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Lewis, Roger J.

Harbor-UCLA Medical Center, United States

2022 Rank: 54,200

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Emergency & Critical Care Medicine

SubField 2:

General & Internal Medicine

Rank in SubField 1: 176 out of 34,180 Researchers

Data For The Year: 2022
Metrics Self-Citations Excluded All
Rank Based on Composite Score54,20057,213
Total Cites10,95812,118
H-index4952
Hm-index2324
Number of Single Authored Papers2121
Total Cites to Single Authored Papers136146
Number of Single+First Authored Papers4242
Total Cites to Single+First Authored Papers518576
Number of Single+First+Last Authored Papers159159
Total Cites to Single+First+Last Authored Papers4,7104,974
Composite Score33
Number of Distinct Citing Papers10,08810,958
Ratio of Total Citations to Distinct Citing Papers 1.09 1.11
Self-Citation Percentage
9.57%
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Lewis, Roger J.

Harbor-UCLA Medical Center, United States

2021 Rank: 55,092

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Emergency & Critical Care Medicine

SubField 2:

General & Internal Medicine

Rank in SubField 1: 180 out of 31,838 Researchers

Data For The Year: 2021
Metrics Self-Citations Excluded All
Rank Based on Composite Score55,09257,418
Total Cites9,85210,817
H-index4650
Hm-index2224
Number of Single Authored Papers2121
Total Cites to Single Authored Papers133142
Number of Single+First Authored Papers4141
Total Cites to Single+First Authored Papers505557
Number of Single+First+Last Authored Papers157157
Total Cites to Single+First+Last Authored Papers4,4244,667
Composite Score33
Number of Distinct Citing Papers9,0839,830
Ratio of Total Citations to Distinct Citing Papers 1.08 1.10
Self-Citation Percentage
8.92%
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Lewis, Roger J.

Harbor-UCLA Medical Center, United States

2020 Rank: 59,732

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Emergency & Critical Care Medicine

SubField 2:

Surgery

Rank in SubField 1: 210 out of 28,564 Researchers

Data For The Year: 2020
Metrics Self-Citations Excluded All
Rank Based on Composite Score59,73263,009
Total Cites7,8828,670
H-index4246
Hm-index2122
Number of Single Authored Papers2121
Total Cites to Single Authored Papers122131
Number of Single+First Authored Papers4141
Total Cites to Single+First Authored Papers453500
Number of Single+First+Last Authored Papers152152
Total Cites to Single+First+Last Authored Papers3,7433,972
Composite Score33
Number of Distinct Citing Papers7,2217,819
Ratio of Total Citations to Distinct Citing Papers 1.09 1.11
Self-Citation Percentage
9.09%
Found an error in your data? Contact us with your profile link. Contact Us →
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