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 131 2372 2209 1336 1225 590 73595

Robert Freedman publications per year

The chart shows the history of publications by Robert Freedman between 1974 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Robert Freedman published across 51 years, from 1974 to 2024, averaging 11.9 papers a year. Output peaked at 27 publications in 1995. 8 of the 605 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1974 to 2024. Vertical axis: number of publications, 0 to 27. Peak 27 publications in 1995. 1974: 2 publications 1975: 1 publication 1976: 2 publications 1977: 0 publications 1978: 2 publications 1979: 6 publications 1980: 9 publications 1981: 10 publications 1982: 8 publications 1983: 11 publications 1984: 10 publications 1985: 15 publications 1986: 13 publications 1987: 20 publications 1988: 12 publications 1989: 19 publications 1990: 12 publications 1991: 11 publications 1992: 10 publications 1993: 23 publications 1994: 19 publications 1995: 27 publications 1996: 18 publications 1997: 14 publications 1998: 17 publications 1999: 17 publications 2000: 14 publications 2001: 14 publications 2002: 16 publications 2003: 13 publications 2004: 8 publications 2005: 19 publications 2006: 20 publications 2007: 19 publications 2008: 18 publications 2009: 15 publications 2010: 15 publications 2011: 12 publications 2012: 6 publications 2013: 7 publications 2014: 14 publications 2015: 16 publications 2016: 12 publications 2017: 9 publications 2018: 14 publications 2019: 9 publications 2020: 6 publications 2021: 10 publications 2022: 3 publications 2023: 3 publications 2024: 5 publications
1974 2024

605 publications in total across all disciplines

View publications per year as a table
Robert Freedman: publications per year, 1974 to 2024
Year Publications
1974 2
1975 1
1976 2
1977 0
1978 2
1979 6
1980 9
1981 10
1982 8
1983 11
1984 10
1985 15
1986 13
1987 20
1988 12
1989 19
1990 12
1991 11
1992 10
1993 23
1994 19
1995 27
1996 18
1997 14
1998 17
1999 17
2000 14
2001 14
2002 16
2003 13
2004 8
2005 19
2006 20
2007 19
2008 18
2009 15
2010 15
2011 12
2012 6
2013 7
2014 14
2015 16
2016 12
2017 9
2018 14
2019 9
2020 6
2021 10
2022 3
2023 3
2024 5
Total 605
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Robert Freedman publications per year - data summary

  • Robert Freedman, a Medicine scholar from University of Colorado Anschutz Medical Campus, has 605 publications recorded across 51 years, from 1974 to 2024.
  • The oldest publication on record dates to 1974 and the most recent to 2024.
  • The most productive year is 1995, with 27 publications.
  • The least productive year with any output is 1975, with 1 publication.
  • 1 of the 51 years in the span carries no publications at all (1977).
  • The rate of publication averages 11.9 papers per year over the whole span, or 12.1 per year counting only the 50 years with at least one publication.
  • The last 5 years on the chart (2020-2024) hold 27 publications, 4% of the career total.
  • Split into equal eras - 1974-1990: 152 publications (8.9 per year); 1991-2007: 279 publications (16.4 per year); 2008-2024: 174 publications (10.2 per year).
  • Comparing the opening and closing eras, the overall trend of publication is broadly steady.

Robert Freedman 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 Robert Freedman 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, 581–600 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: 590 publications — 71st percentile

71% 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
421–440 806
441–460 771
461–480 751
481–500 713
501–520 617
521–540 610
541–560 537
561–580 504
581–600 509 590
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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Robert Freedman publication distribution in Medicine in 2026 - data summary

  • The chart plots the publication count of all 20,134 Medicine scientists ranked by Research.com in 2026, grouped into 86 ranges running from 101–120 to 1,796+ publications.
  • Robert Freedman, a Medicine scholar from University of Colorado Anschutz Medical Campus, records 590 publications - the 71st percentile of the discipline.
  • 71% of ranked Medicine scientists score the same or lower than Robert Freedman, and about 29% score higher.
  • The median of the discipline falls in the 441–460 publications range, and Robert Freedman ranks above the median.
  • The most crowded range is 341–360 publications, holding 922 scientists (5% of the field).
  • 64% of the field sits in the lowest quarter of the value range (up to 521–540 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,796 publications or more, 100 scientists in all (<1% of the field).

Robert Freedman 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 Robert Freedman 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, 130–131 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: 131 D-Index — 88th percentile

88% 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
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
130–131 179 131
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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Robert Freedman D-index placement in Medicine in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 20,134 Medicine scientists ranked by Research.com in 2026, grouped into 75 ranges running from 70–71 to 217+ D-Index.
  • Robert Freedman, a Medicine scholar from University of Colorado Anschutz Medical Campus, records 131 D-Index - the 88th percentile of the discipline.
  • 88% of ranked Medicine scientists score the same or lower than Robert Freedman, and about 12% score higher.
  • The median of the discipline falls in the 94–95 D-Index range, and Robert Freedman ranks above the median.
  • The most crowded range is 82–83 D-Index, holding 1,027 scientists (5% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 106–107 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 217 D-Index or more, 98 scientists in all (<1% of the field).

Research.com Recognitions

  • 2004 - Member of the National Academy of Medicine (NAM)

Overview

Robert Freedman is affiliated with the University of Colorado Anschutz Medical Campus in the United States. Their research primarily focuses on medicine, with significant contributions to pediatrics, perinatology, and child health, as well as genetics, public health, environmental and occupational health, molecular biology, and psychiatry and mental health.

The scientist's research topics cover a range of subjects including:

  • Maternal Mental Health During Pregnancy and Postpartum
  • Birth, Development, and Health
  • Genetic Associations and Epidemiology
  • Tryptophan and brain disorders
  • Neonatal and fetal brain pathology
  • Genomics and Rare Diseases
  • Schizophrenia research and treatment

Robert Freedman has contributed to numerous scientific papers, with a selection of recent papers including:

  • "A Comparison of Ten Polygenic Score Methods for Psychiatric Disorders Applied Across Multiple Cohorts," 2021, in Biological Psychiatry
  • "Interaction Testing and Polygenic Risk Scoring to Estimate the Association of Common Genetic Variants With Treatment Resistance in Schizophrenia," 2022, in JAMA Psychiatry
  • "Double blind, two dose, randomized, placebo-controlled, cross-over clinical trial of the positive allosteric modulator at the alpha7 nicotinic cholinergic receptor AVL-3288 in schizophrenia patients," 2020, in Neuropsychopharmacology
  • "P50 inhibitory sensory gating in schizophrenia: analysis of recent studies," 2020, in Schizophrenia Research
  • "Penetrance and Pleiotropy of Polygenic Risk Scores for Schizophrenia, Bipolar Disorder, and Depression Among Adults in the US Veterans Affairs Health Care System," 2022, in JAMA Psychiatry

They have frequently collaborated with several coauthors, including:

  • Sharon K. Hunter (12 joint publications)
  • M. Camille Hoffman (12 joint publications)
  • Amanda J. Law (11 joint publications)
  • Tim B. Bigdeli (10 joint publications)
  • Steven R. Bailey (8 joint publications)

Robert Freedman's work has been published in multiple venues, with notable frequent venues being:

  • Catheterization and Cardiovascular Interventions (8 publications)
  • JAMA Psychiatry (3 publications)
  • Schizophrenia Research (3 publications)
  • Journal of Psychiatric Research (2 publications)
  • Schizophrenia Bulletin (2 publications)

In recognition of their contributions, Robert Freedman was elected as a Member of the National Academy of Medicine in 2004.

Best Publications

  • Biological insights from 108 schizophrenia-associated genetic loci

    Stephan Ripke;Stephan Ripke;Benjamin M. Neale;Benjamin M. Neale;Aiden Corvin;James T. R. Walters

  • Genome-wide association study identifies five new schizophrenia loci

    Stephan Ripke;Alan R. Sanders;Kenneth S. Kendler;Douglas F. Levinson

  • Genetic relationship between five psychiatric disorders estimated from genome-wide SNPs

    S. Hong Lee;Stephan Ripke;Stephan Ripke;Benjamin M. Neale;Benjamin M. Neale;Stephen V. Faraone

  • Modeling Linkage Disequilibrium Increases Accuracy of Polygenic Risk Scores

    Bjarni J. Vilhjálmsson;Jian Yang;Hilary K. Finucane;Alexander Gusev

  • Linkage of a neurophysiological deficit in schizophrenia to a chromosome 15 locus

    Robert Freedman;Hilary Coon;Marina Myles-Worsley;Avi Orr-Urtreger

  • Common variants on chromosome 6p22.1 are associated with schizophrenia

    Jianxin Shi;Douglas F. Levinson;Jubao Duan;Alan R. Sanders

  • Neurophysiological evidence for a defect in neuronal mechanisms involved in sensory gating in schizophrenia.

    Lawrence E Adler;E. Pachtman;R. D. Franks;M. Pecevich

  • Identification of loci associated with schizophrenia by genome-wide association and follow-up

    Michael C. O'Donovan;Nicholas Craddock;Nadine Norton;Hywel Williams

  • Contribution of copy number variants to schizophrenia from a genome-wide study of 41,321 subjects

    Christian R Marshall;Daniel P Howrigan;Daniel P Howrigan;Daniele Merico;Bhooma Thiruvahindrapuram

  • Normalization of Auditory Physiology by Cigarette Smoking in Schizophrenic Patients

    Lawrence E. Adler;Lee D. Hoffer;Anne Wiser;Robert Freedman

  • Evidence in postmortem brain tissue for decreased numbers of hippocampal nicotinic receptors in schizophrenia.

    Robert Freedman;Michael Hall;Lawrence E. Adler;Sherry Leonard

  • Schizophrenia, Sensory Gating, and Nicotinic Receptors

    Lawrence E. Adler;Ann Olincy;Merilyne Waldo;Josette G. Harris

  • Proof-of-concept trial of an alpha7 nicotinic agonist in schizophrenia.

    Ann Olincy;Josette G. Harris;Lynn L. Johnson;Vicki Pender

  • Genomic Dissection of Bipolar Disorder and Schizophrenia, Including 28 Subphenotypes

    Douglas M. Ruderfer;Stephan Ripke;Stephan Ripke;Stephan Ripke;Andrew McQuillin;James Boocock

  • Psychiatric genome-wide association study analyses implicate neuronal, immune and histone pathways

    Colm O'Dushlaine;Lizzy Rossin;Phil H. Lee;Laramie Duncan;Laramie Duncan

  • Neurophysiological evidence for a defect in inhibitory pathways in schizophrenia: comparison of medicated and drug-free patients.

    Freedman R;Adler Le;Waldo Mc;Pachtman E

  • Association of Promoter Variants in the α7 Nicotinic Acetylcholine Receptor Subunit Gene With an Inhibitory Deficit Found in Schizophrenia

    Sherry Leonard;Judith Gault;Jan Hopkins;Judith Logel

  • Human fetal dopamine neurons grafted into the striatum in two patients with severe Parkinson's disease. A detailed account of methodology and a 6-month follow-up

    Olle Lindvall;Stig Rehncrona;Patrik Brundin;Björn Gustavii

  • Normalization by nicotine of deficient auditory sensory gating in the relatives of schizophrenics.

    Lawrence E. Adler;Lee J. Hoffer;Jay Griffith;Merilyne C. Waldo

  • Deconstructing Schizophrenia: An Overview of the Use of Endophenotypes in Order to Understand a Complex Disorder

    David L. Braff;Robert Freedman;Nicholas J. Schork;Irving I. Gottesman

Frequent Co-Authors

Lawrence E. Adler
Lawrence E. Adler University of Colorado Denver
Jeremy M. Silverman
Jeremy M. Silverman Icahn School of Medicine at Mount Sinai
William Byerley
William Byerley University of California, San Francisco
Larry J. Siever
Larry J. Siever Icahn School of Medicine at Mount Sinai
Larry J. Seidman
Larry J. Seidman Beth Israel Deaconess Medical Center
Ming T. Tsuang
Ming T. Tsuang University of California, San Diego
Allen D. Radant
Allen D. Radant University of Washington
David L. Braff
David L. Braff University of California, San Diego
Gregory A. Light
Gregory A. Light University of California, San Diego
Barry J. Hoffer
Barry J. Hoffer Case Western Reserve University

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