Lewis, Roger J.
David Geffen School of Medicine at UCLA,
United States
2025 Rank: 38,437
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: 115 out of 41,816 Researchers
Data For The Year: 2025
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 38,437 | 41,799 |
| Total Cites | 2,303 | 2,571 |
| H-index | 22 | 24 |
| Hm-index | 6 | 6 |
| Number of Single Authored Papers | 20 | 20 |
| Total Cites to Single Authored Papers | 7 | 7 |
| Number of Single+First Authored Papers | 42 | 42 |
| Total Cites to Single+First Authored Papers | 26 | 27 |
| Number of Single+First+Last Authored Papers | 165 | 165 |
| Total Cites to Single+First+Last Authored Papers | 760 | 774 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 2,067 | 2,230 |
| Ratio of Total Citations to Distinct Citing Papers | 1.11 | 1.15 |
| Self-Citation Percentage |
10.42%
|
|
Lewis, Roger J.
David Geffen School of Medicine at UCLA,
United States
2024 Rank: 45,727
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: 141 out of 39,519 Researchers
Data For The Year: 2024
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 45,727 | 46,631 |
| Total Cites | 2,419 | 2,726 |
| H-index | 21 | 22 |
| Hm-index | 6 | 6 |
| Number of Single Authored Papers | 21 | 21 |
| Total Cites to Single Authored Papers | 4 | 4 |
| Number of Single+First Authored Papers | 43 | 43 |
| Total Cites to Single+First Authored Papers | 23 | 26 |
| Number of Single+First+Last Authored Papers | 166 | 166 |
| Total Cites to Single+First+Last Authored Papers | 697 | 713 |
| Composite Score | 2 | 2 |
| Number of Distinct Citing Papers | 2,159 | 2,353 |
| Ratio of Total Citations to Distinct Citing Papers | 1.12 | 1.16 |
| Self-Citation Percentage |
11.26%
|
|
Lewis, Roger J.
Harbor-UCLA Medical Center,
United States
2023 Rank: 35,391
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: 124 out of 37,023 Researchers
Data For The Year: 2023
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 35,391 | 36,084 |
| Total Cites | 2,786 | 3,219 |
| H-index | 21 | 23 |
| Hm-index | 7 | 7 |
| Number of Single Authored Papers | 20 | 20 |
| Total Cites to Single Authored Papers | 5 | 5 |
| Number of Single+First Authored Papers | 41 | 41 |
| Total Cites to Single+First Authored Papers | 30 | 32 |
| Number of Single+First+Last Authored Papers | 162 | 162 |
| Total Cites to Single+First+Last Authored Papers | 687 | 713 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 2,429 | 2,662 |
| Ratio of Total Citations to Distinct Citing Papers | 1.15 | 1.21 |
| Self-Citation Percentage |
13.45%
|
|
Lewis, Roger J.
Harbor-UCLA Medical Center,
United States
2022 Rank: 43,371
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 34,180 Researchers
Data For The Year: 2022
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 43,371 | 46,899 |
| Total Cites | 2,075 | 2,303 |
| H-index | 17 | 18 |
| Hm-index | 7 | 7 |
| Number of Single Authored Papers | 21 | 21 |
| Total Cites to Single Authored Papers | 5 | 5 |
| Number of Single+First Authored Papers | 42 | 42 |
| Total Cites to Single+First Authored Papers | 32 | 35 |
| Number of Single+First+Last Authored Papers | 159 | 159 |
| Total Cites to Single+First+Last Authored Papers | 584 | 592 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 1,921 | 2,082 |
| Ratio of Total Citations to Distinct Citing Papers | 1.08 | 1.11 |
| Self-Citation Percentage |
9.90%
|
|
Lewis, Roger J.
Harbor-UCLA Medical Center,
United States
2021 Rank: 42,951
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: 144 out of 31,838 Researchers
Data For The Year: 2021
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 42,951 | 45,101 |
| Total Cites | 2,315 | 2,535 |
| H-index | 18 | 20 |
| Hm-index | 8 | 8 |
| Number of Single Authored Papers | 21 | 21 |
| Total Cites to Single Authored Papers | 12 | 12 |
| Number of Single+First Authored Papers | 41 | 41 |
| Total Cites to Single+First Authored Papers | 63 | 69 |
| Number of Single+First+Last Authored Papers | 157 | 157 |
| Total Cites to Single+First+Last Authored Papers | 837 | 854 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 2,193 | 2,379 |
| Ratio of Total Citations to Distinct Citing Papers | 1.06 | 1.07 |
| Self-Citation Percentage |
8.68%
|
|
Lewis, Roger J.
Harbor-UCLA Medical Center,
United States
2020 Rank: 57,634
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: 177 out of 28,564 Researchers
Data For The Year: 2020
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 57,634 | 62,766 |
| Total Cites | 1,518 | 1,665 |
| H-index | 14 | 14 |
| Hm-index | 7 | 7 |
| Number of Single Authored Papers | 21 | 21 |
| Total Cites to Single Authored Papers | 6 | 6 |
| Number of Single+First Authored Papers | 41 | 41 |
| Total Cites to Single+First Authored Papers | 42 | 49 |
| Number of Single+First+Last Authored Papers | 152 | 152 |
| Total Cites to Single+First+Last Authored Papers | 558 | 576 |
| Composite Score | 2 | 2 |
| Number of Distinct Citing Papers | 1,450 | 1,584 |
| Ratio of Total Citations to Distinct Citing Papers | 1.05 | 1.05 |
| Self-Citation Percentage |
8.83%
|
|
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