World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
142
Citations
80930
World Ranking
1558
National Ranking
906

Igor Grant 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 Igor Grant sits on this spectrum.

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: 611 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 publications 1,796+

This scientist: 871 publications — 90th percentile

90% of scientists in this discipline score the same or lower.

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

Igor Grant 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 Igor Grant sits on this spectrum.

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: 400 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 D-Index 217+

This scientist: 142 D-Index — 92nd percentile

92% of scientists in this discipline score the same or lower.

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

Overview

Igor Grant is affiliated with the University of California, San Diego in the United States. Their research primarily focuses on neuroscience, with specific interests spanning a range of subfields including general social sciences, epidemiology, economics and econometrics, virology, and biological psychiatry.

Their scholarly contributions include publications in reputable venues such as Nature Mental Health and Brain Behavior & Immunity - Health. Notable recent papers include:

  • On the issue of treating HIV in people with syndemic mental-health and substance-use disorders, 2024, Nature Mental Health
  • Identifying methamphetamine use predictors in HIV infection: Immune-dopaminergic signatures in peripheral leukocytes and the role of COMT genotype, 2024, Brain Behavior & Immunity - Health

Igor Grant's work addresses diverse topics within HIV research and related fields. Key topics covered in their research are:

  • HIV, TB, and STIs Epidemiology
  • HIV, Drug Use, Sexual Risk
  • HIV/AIDS Impact and Responses
  • HIV Research and Treatment
  • Tryptophan and brain disorders
  • Neuroinflammation and Neurodegeneration Mechanisms

Their collaborative network includes frequent coauthors such as Violaine Delorme-Walker, Jennifer E. Iudicello, Ronald J. Ellis, Scott Letendre, and Maria Cecília Garibaldi Marcondes, with each contributing to multiple joint publications.

Overall, Igor Grant's research integrates epidemiological approaches with neurobiological mechanisms to study complex interactions between HIV infection, substance use, mental health, and neurodegenerative processes.

Best Publications

  • Updated research nosology for HIV-associated neurocognitive disorders

    A. Antinori;G. Arendt;J. T. Becker;B. J. Brew

  • HIV-associated neurocognitive disorders persist in the era of potent antiretroviral therapy: CHARTER Study.

    R. K. Heaton;D. B. Clifford;D. R. Franklin;S. P. Woods

  • HIV-associated neurocognitive disorders before and during the era of combination antiretroviral therapy: differences in rates, nature, and predictors

    Robert K. Heaton;Donald R. Franklin;Ronald J. Ellis;J. Allen McCutchan

  • Mood disorders in the medically ill: scientific review and recommendations.

    Dwight L. Evans;Dennis S. Charney;Dennis S. Charney;Lydia Lewis;Robert N. Golden

  • The prevalence of dementia and Alzheimer's disease in Shanghai, China: Impact of age, gender, and education

    M Y Zhang;R Katzman;D Salmon;H Jin

  • A Chinese version of the mini-mental state examination; Impact of illiteracy in a Shanghai dementia survey

    Robert Katzman;Mingyuan Zhang;Ouang-Ya-Qu;Zhengyu Wang

  • Validation of the CNS Penetration-Effectiveness rank for quantifying antiretroviral penetration into the central nervous system.

    Scott Letendre;Jennifer Marquie-Beck;Edmund Capparelli;Brookie Best

  • The Impact of HIV-Associated Neuropsychological Impairment on Everyday Functioning

    Robert K Heaton;Thomas D Marcotte;Monica Rivera Mindt;Joseph Sadek

  • The HNRC 500-Neuropsychology of Hiv infection at different disease stages

    Robert K. Heaton;Igor Grant;Nelson Butters;Desirée A. White

  • Episodic and Semantic Memory: A Comparison of Amnesic and Demented Patients

    Nelson Butters;Eric Granholm;David P. Salmon;Igor Grant

  • Neuropsychological assessment of neuropsychiatric disorders

    Igor Grant;Kenneth M. Adams

  • Neurocognitive Effects of Methamphetamine: A Critical Review and Meta-analysis

    J. Cobb Scott;Steven Paul Woods;Steven Paul Woods;Georg E. Matt;Rachel A. Meyer

  • Life quality of patients with chronic obstructive pulmonary disease.

    A. John McSweeny;A. John McSweeny;Igor Grant;Robert K. Heaton;Kenneth M. Adams

  • Evidence for Early Central Nervous System Involvement in the Acquired Immunodeficiency Syndrome (AIDS) and Other Human Immunodeficiency Virus (HIV) Infections: Studies with Neuropsychologic Testing and Magnetic Resonance Imaging

    I Grant;J H Atkinson;J R Hesselink;C J Kennedy

  • Cognitive Neuropsychology of HIV-Associated Neurocognitive Disorders

    Steven Paul Woods;David J. Moore;Erica Weber;Igor Grant

  • Dendritic injury is a pathological substrate for human immunodeficiency virus-related cognitive disorders. HNRC Group. The HIV Neurobehavioral Research Center.

    E Masliah;R K Heaton;T D Marcotte;R J Ellis

  • Nomenclature and research case definitions for neurologic manifestations of human immunodeficiency virus-type 1 (HIV-1) infection

    Robert S. Janssen;David R. Cornblath;Leon G. Epstein;Richard P. Foa

  • Test-retest reliability and practice effects of expanded Halstead-Reitan Neuropsychological Test Battery.

    Sureyya S. Dikmen;Robert K. Heaton;Igor Grant;Nancy R. Temkin

  • Prevalence of psychiatric disorders among men infected with human immunodeficiency virus. A controlled study.

    Atkinson Jh;Grant I;Kennedy Cj;Richman Dd

  • Predictive validity of global deficit scores in detecting neuropsychological impairment in HIV infection.

    Catherine L. Carey;Steven Paul Woods;Raul Gonzalez;Emily Conover

Frequent Co-Authors

Robert K. Heaton
Robert K. Heaton University of California, San Diego
Ronald J. Ellis
Ronald J. Ellis University of California, San Diego
Thomas L. Patterson
Thomas L. Patterson University of California, San Diego
Scott Letendre
Scott Letendre University of California, San Diego
Steven Paul Woods
Steven Paul Woods University of Houston
Thomas D. Marcotte
Thomas D. Marcotte University of California, San Diego
Donald Franklin
Donald Franklin University of California, San Diego
J. Allen McCutchan
J. Allen McCutchan University of California, San Diego
Benjamin B. Gelman
Benjamin B. Gelman The University of Texas Medical Branch at Galveston
Sonia Ancoli-Israel
Sonia Ancoli-Israel University of California, San Diego

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring a medical career doesn’t always require the traditional path through an MD program. Many students consider alternative or complementary routes that focus on specific healthcare sectors or offer greater flexibility. For example, those who are already registered nurses may advance their careers by enrolling in asn to fnp programs, which pave the way to become a Family Nurse Practitioner.

If you're passionate about nutrition and wellness, nutrition degrees online offer specialized learning in dietetics, clinical nutrition, and health coaching—all from home. For those interested in healthcare management, it’s important to choose programs that meet high educational standards. Consider which online healthcare degree programs are recognized for their accreditation by cahme? to ensure your qualification is highly regarded.

Lastly, if you’re looking for a flexible option to further your nursing education, rn bsn online programs no clinicals allow RNs to earn their Bachelor of Science in Nursing without on-site clinical requirements. These online pathways can expand your career opportunities and help meet the growing demand for skilled health professionals.

Best Scientists Citing Igor Grant

Trending Scientists

Recently Published Articles