World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 82 16019 15071 8060 7457 404 27216

G. Caleb Alexander publications per year

The chart shows the history of publications by G. Caleb Alexander between 1998 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. G. Caleb Alexander published across 28 years, from 1998 to 2025, averaging 16.8 papers a year. Output peaked at 55 publications in 2021. 38 of the 470 publications appeared in the last two years.

No. of publications
10 20 30 40 50
Bar chart. Horizontal axis: year, 1998 to 2025. Vertical axis: number of publications, 0 to 55. Peak 55 publications in 2021. 1998: 1 publication 1999: 0 publications 2000: 0 publications 2001: 1 publication 2002: 2 publications 2003: 4 publications 2004: 5 publications 2005: 10 publications 2006: 18 publications 2007: 14 publications 2008: 20 publications 2009: 15 publications 2010: 13 publications 2011: 9 publications 2012: 17 publications 2013: 15 publications 2014: 15 publications 2015: 25 publications 2016: 21 publications 2017: 27 publications 2018: 37 publications 2019: 27 publications 2020: 32 publications 2021: 55 publications 2022: 33 publications 2023: 16 publications 2024: 24 publications 2025: 14 publications
1998 2025

470 publications in total across all disciplines

View publications per year as a table
G. Caleb Alexander: publications per year, 1998 to 2025
Year Publications
1998 1
1999 0
2000 0
2001 1
2002 2
2003 4
2004 5
2005 10
2006 18
2007 14
2008 20
2009 15
2010 13
2011 9
2012 17
2013 15
2014 15
2015 25
2016 21
2017 27
2018 37
2019 27
2020 32
2021 55
2022 33
2023 16
2024 24
2025 14
Total 470
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G. Caleb Alexander publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where G. Caleb Alexander sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 86 bars. Horizontal axis: publications, 101–120 to 1,796+. Vertical axis: number of scientists, 0 to 922. Most scientists, 922, have 341–360 publications. The last bar groups every scientist with 1,796 publications or more. The highlighted bar, 401–420 publications, is where this scientist sits. 101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 610 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101–120 publications 1,796+

This scientist: 404 publications — 39th percentile

39% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

View publications distribution as a table
Number of Medicine scientists by publication count, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
Publications Scientists This scientist
101–120 5
121–140 26
141–160 73
161–180 155
181–200 230
201–220 363
221–240 487
241–260 545
261–280 722
281–300 768
301–320 834
321–340 895
341–360 922
361–380 838
381–400 861
401–420 918 404
421–440 806
441–460 771
461–480 751
481–500 713
501–520 617
521–540 610
541–560 537
561–580 504
581–600 509
601–620 396
621–640 386
641–660 371
661–680 340
681–700 336
701–720 307
721–740 259
741–760 230
761–780 228
781–800 217
801–820 204
821–840 186
841–860 177
861–880 155
881–900 139
901–920 145
921–940 116
941–960 133
961–980 91
981–1,000 96
1,001–1,020 77
1,021–1,040 70
1,041–1,060 63
1,061–1,080 77
1,081–1,100 49
1,101–1,120 54
1,121–1,140 49
1,141–1,160 51
1,161–1,180 35
1,181–1,200 39
1,201–1,220 26
1,221–1,240 37
1,241–1,260 36
1,261–1,280 27
1,281–1,300 32
1,301–1,320 28
1,321–1,340 17
1,341–1,360 30
1,361–1,380 28
1,381–1,400 17
1,401–1,420 21
1,421–1,440 15
1,441–1,460 12
1,461–1,480 12
1,481–1,500 18
1,501–1,520 14
1,521–1,540 17
1,541–1,560 15
1,561–1,580 6
1,581–1,600 2
1,601–1,620 12
1,621–1,640 11
1,641–1,660 8
1,661–1,680 5
1,681–1,700 5
1,701–1,720 10
1,721–1,740 12
1,741–1,760 14
1,761–1,780 6
1,781–1,795 5
1,796+ 100
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G. Caleb Alexander D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where G. Caleb Alexander sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 75 bars. Horizontal axis: D-Index, 70–71 to 217+. Vertical axis: number of scientists, 0 to 1,027. Most scientists, 1,027, have 82–83 D-Index. The last bar groups every scientist with 217 D-Index or more. The highlighted bar, 82–83 D-Index, is where this scientist sits. 70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 399 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70–71 D-Index 217+

This scientist: 82 D-Index — 21st percentile

21% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

View D-Index distribution as a table
Number of Medicine scientists by D-index, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
D-Index Scientists This scientist
70–71 226
72–73 391
74–75 574
76–77 730
78–79 891
80–81 972
82–83 1,027 82
84–85 1,003
86–87 960
88–89 970
90–91 922
92–93 839
94–95 808
96–97 779
98–99 668
100–101 611
102–103 630
104–105 513
106–107 541
108–109 445
110–111 429
112–113 399
114–115 393
116–117 318
118–119 302
120–121 287
122–123 255
124–125 256
126–127 252
128–129 230
130–131 179
132–133 168
134–135 163
136–137 159
138–139 134
140–141 134
142–143 118
144–145 109
146–147 106
148–149 74
150–151 79
152–153 80
154–155 87
156–157 57
158–159 74
160–161 69
162–163 60
164–165 53
166–167 39
168–169 42
170–171 32
172–173 39
174–175 40
176–177 28
178–179 19
180–181 23
182–183 31
184–185 18
186–187 20
188–189 22
190–191 13
192–193 21
194–195 12
196–197 12
198–199 14
200–201 15
202–203 13
204–205 10
206–207 8
208–209 4
210–211 12
212–213 11
214–215 10
216 4
217+ 98
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Overview

G. Caleb Alexander is affiliated with Johns Hopkins University in the United States and has an extensive research record primarily in the field of medicine. Their scholarly output includes a strong focus on public health and pharmacology, particularly related to opioid use disorder, health systems, pharmaceutical practices, and the effects of COVID-19. Their work encompasses various subfields such as economics and econometrics, infectious diseases, cardiology, and geriatrics.

The scientist has published numerous papers in high-impact journals. Significant recent papers include:

  • Use and Content of Primary Care Office-Based vs Telemedicine Care Visits During the COVID-19 Pandemic in the US (2020, JAMA Network Open)
  • An Epidemic in the Midst of a Pandemic: Opioid Use Disorder and COVID-19 (2020, Annals of Internal Medicine)
  • Evaluation of Aducanumab for Alzheimer Disease (2021, JAMA)
  • Association Between Renin-Angiotensin System Blockade Discontinuation and All-Cause Mortality Among Persons With Low Estimated Glomerular Filtration Rate (2020, JAMA Internal Medicine)
  • The Evolving Overdose Epidemic: Synthetic Opioids and Rising Stimulant-Related Harms (2020, Epidemiologic Reviews)

Frequent co-authors collaborating with G. Caleb Alexander include:

  • Hemalkumar B. Mehta
  • Dima M. Qato
  • Kathleen M. Andersen
  • Jodi B Segal
  • James Heyward

The scientist regularly publishes in several prominent venues, with multiple contributions to journals such as:

  • JAMA Network Open
  • Annals of Internal Medicine
  • JAMA
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Health Affairs

Their research spans important topics including:

  • Opioid Use Disorder Treatment
  • Health Systems, Economic Evaluations, Quality of Life
  • Pharmaceutical Practices and Patient Outcomes
  • COVID-19 Clinical Research Studies
  • Pharmaceutical Economics and Policy
  • Medication Adherence and Compliance
  • Long-Term Effects of COVID-19

In total, the scientist has contributed 327 publications within the broad field of medicine, emphasizing the intersection of clinical research, health economics, and public health policy. Their work integrates epidemiological methods with health systems analysis, addressing key issues such as medication adherence and the impacts of opioid-related disorders.

Best Publications

  • The Prescription Opioid and Heroin Crisis: A Public Health Approach to an Epidemic of Addiction

    Andrew Kolodny;David T. Courtwright;Catherine S. Hwang;Peter Kreiner

  • Use of Prescription and Over-the-counter Medications and Dietary Supplements Among Older Adults in the United States

    Dima M. Qato;G. Caleb Alexander;G. Caleb Alexander;Rena M. Conti;Michael Johnson

  • Prescription Opioid Analgesics Commonly Unused After Surgery: A Systematic Review.

    Mark C. Bicket;Jane J. Long;Peter J. Pronovost;Peter J. Pronovost;G. Caleb Alexander

  • Changes in Prescription and Over-the-Counter Medication and Dietary Supplement Use Among Older Adults in the United States, 2005 vs 2011

    Dima M. Qato;Jocelyn Wilder;L. Philip Schumm;Victoria Gillet

  • National trends in ambulatory oral anticoagulant use

    Geoffrey D. Barnes;Eleanor Lucas;G. Caleb Alexander;Zachary D. Goldberger

  • Barriers to cadaveric renal transplantation among blacks, women, and the poor.

    G. Caleb Alexander;Ashwini R. Sehgal;Ashwini R. Sehgal

  • Reconsidering Medication Appropriateness for Patients Late in Life

    Holly M. Holmes;Déon Cox Hayley;G. Caleb Alexander;Greg A. Sachs

  • Effect of Adherence to Oral Anticoagulants on Risk of Stroke and Major Bleeding Among Patients With Atrial Fibrillation

    Xiaoxi Yao;Neena S. Abraham;G. Caleb Alexander;William Crown

  • Patient-physician communication about out-of-pocket costs.

    G. Caleb Alexander;Lawrence P. Casalino;David O. Meltzer

  • Use and Content of Primary Care Office-Based vs Telemedicine Care Visits During the COVID-19 Pandemic in the US

    G. Caleb Alexander;Matthew Tajanlangit;James Heyward;Omar Mansour

  • Comparative risk of gastrointestinal bleeding with dabigatran, rivaroxaban, and warfarin: population based cohort study

    Neena S Abraham;Sonal Singh;G Caleb Alexander;Herbert Heien

  • Ambulatory diagnosis and treatment of nonmalignant pain in the united states, 2000-2010

    Matthew Daubresse;Hsien Yen Chang;Yuping Yu;Shilpa Viswanathan

  • Outpatient hypertension treatment, treatment intensification, and control in Western Europe and the United States.

    Y. Richard Wang;G. Caleb Alexander;G. Caleb Alexander;Randall S. Stafford

  • National Trends in Oral Anticoagulant Use in the United States, 2007 to 2011

    Kate Kirley;Dima M. Qato;Rachel Kornfield;Randall S. Stafford

  • Estimated Costs of Pivotal Trials for Novel Therapeutic Agents Approved by the US Food and Drug Administration, 2015-2016

    Thomas J. Moore;Hanzhe Zhang;Gerard Anderson;G. Caleb Alexander

  • An Epidemic in the Midst of a Pandemic: Opioid Use Disorder and COVID-19.

    G. Caleb Alexander;Kenneth B. Stoller;Rebecca Lee Haffajee;Brendan Saloner

  • Knowledge and Early Adoption of the HPV Vaccine Among Girls and Young Women: Results of a National Survey

    Rachel Caskey;Stacy Tessler Lindau;Stacy Tessler Lindau;G. Caleb Alexander

  • Effect of Florida’s Prescription Drug Monitoring Program and Pill Mill Laws on Opioid Prescribing and Use

    Lainie Rutkow;Hsien Yen Chang;Matthew Daubresse;Daniel W. Webster

  • National trends in treatment of type 2 diabetes mellitus, 1994-2007.

    G. Caleb Alexander;Niraj L. Sehgal;Rachael M. Moloney;Randall S. Stafford

  • Impact of FDA Black Box Advisory on Antipsychotic Medication Use

    E. Ray Dorsey;Atonu Rabbani;Sarah A. Gallagher;Rena M. Conti

Frequent Co-Authors

Jodi B. Segal
Jodi B. Segal Johns Hopkins University
Matthew K. Wynia
Matthew K. Wynia University of Colorado Denver
Randall S. Stafford
Randall S. Stafford Stanford University
Morgan E. Grams
Morgan E. Grams Johns Hopkins University
Josef Coresh
Josef Coresh New York University
David O. Meltzer
David O. Meltzer University of Chicago
Lesley A. Inker
Lesley A. Inker Tufts Medical Center
Ramin Mojtabai
Ramin Mojtabai Johns Hopkins University
Stacie B. Dusetzina
Stacie B. Dusetzina Vanderbilt University
Haiden A. Huskamp
Haiden A. Huskamp Harvard University

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