World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
75
Citations
20308
World Ranking
19129
National Ranking
9533

Richard J. Grand 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 Richard J. Grand 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: 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 publications 1,796+

This scientist: 378 publications — 34th percentile

34% of scientists in this discipline score the same or lower.

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

Richard J. Grand 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 Richard J. Grand 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: 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 D-Index 217+

This scientist: 75 D-Index — 6th percentile

6% of scientists in this discipline score the same or lower.

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

Overview

Richard J. Grand is affiliated with Boston Children's Hospital in the United States. Their research primarily spans the fields of Biochemistry, Genetics and Molecular Biology, as well as Medicine. Within these broad areas, the scientist has contributed significantly to subfields including Genetics, Molecular Biology, Epidemiology, Surgery, and Immunology.

The main topics of Richard J. Grand's work focus on Inflammatory Bowel Disease, Microscopic Colitis, and Single-cell and spatial transcriptomics. Additional research areas include Helicobacter pylori-related gastroenterology studies, gene expression and cancer classification, autoimmune and inflammatory disorders, and cancer genomics and diagnostics.

Frequent coauthors collaborating with Richard J. Grand include:

  • Steven R. Brant
  • John D. Rioux
  • Judy H. Cho
  • Mark S. Silverberg
  • Dermot McGovern

Richard J. Grand has a substantial publication record in a variety of scientific venues. The most prominent publication venues where they have contributed multiple papers are:

  • Gastroenterology (17 publications)
  • Inflammatory Bowel Diseases (4 publications)
  • bioRxiv (Cold Spring Harbor Laboratory) (4 publications)
  • The American Journal of Gastroenterology (4 publications)
  • Journal of Crohn's and Colitis (3 publications)

Recent notable papers include:

  • "Genetic architecture of the inflammatory bowel diseases across East Asian and European ancestries," 2023, Nature Genetics
  • "BREM-SC: a bayesian random effects mixture model for joint clustering single cell multi-omics data," 2020, Nucleic Acids Research
  • "GMM-Demux: sample demultiplexing, multiplet detection, experiment planning, and novel cell-type verification in single cell sequencing," 2020, Genome Biology
  • "Inflamed Ulcerative Colitis Regions Associated With MRGPRX2-Mediated Mast Cell Degranulation and Cell Activation Modules, Defining a New Therapeutic Target," 2021, Gastroenterology
  • "Common and Rare Variant Prediction and Penetrance of IBD in a Large, Multi-ethnic, Health System-based Biobank Cohort," 2020, Gastroenterology

Best Publications

  • Development and validation of a pediatric Crohn's disease activity index.

    Hyams Js;Ferry Gd;Mandel Fs;Gryboski Jd

  • Development and Validation of a Pediatric Crohnʼs Disease Activity Index

    Jeffrey S. Hyams;George D. Ferry;Francine S. Mandel;Joyce D. Gryboski

  • The Prevalence and Geographic Distribution of Crohn’s Disease and Ulcerative Colitis in the United States

    Michael D. Kappelman;Michael D. Kappelman;Sheryl L. Rifas–Shiman;Ken Kleinman;Dan Ollendorf

  • Development of the Human Gastrointestinal Tract: A Review

    Richard J. Grand;John B. Watkins;Frank M. Torti

  • Common variants at five new loci associated with early-onset inflammatory bowel disease.

    Marcin Imielinski;Robert N. Baldassano;Anne Griffiths;Richard K. Russell

  • Intraepithelial eosinophils: a new diagnostic criterion for reflux esophagitis.

    Harland S. Winter;James L. Madara;Richard J. Stafford;Richard J. Grand

  • Biliary atresia: Current concepts and research directions. Summary of a symposium

    W F Balistreri;R Grand;J H Hoofnagle;F J Suchy

  • Development of the human gastrointestinal tract: twenty years of progress.

    Robert K. Montgomery;Andrew E. Mulberg;Richard J. Grand

  • Gastrointestinal Manifestations of Cystic Fibrosis: A Review

    Roger W. Park;Roger W. Park;Richard J. Grand;Richard J. Grand

  • Growth failure in children with inflammatory bowel disease: a prospective study.

    Kathleen J. Motil;Kathleen J. Motil;Richard J. Grand;Lee Davis-Kraft;Laura L. Ferlic

  • High-Dose Pancreatic-Enzyme Supplements and Fibrosing Colonopathy in Children with Cystic Fibrosis

    Stacey C. FitzSimmons;Greg A. Burkhart;Drucy Borowitz;Richard J. Grand

  • Hepatocyte Nuclear Factor-1α, GATA-4, and Caudal Related Homeodomain Protein Cdx2 Interact Functionally to Modulate Intestinal Gene Transcription IMPLICATION FOR THE DEVELOPMENTAL REGULATION OF THE SUCRASE-ISOMALTASE GENE

    François Boudreau;Edmond H.H.M. Rings;Herbert M. van Wering;Herbert M. van Wering;Richard K. Kim

  • Use of pancreatic enzyme supplements for patients with cystic fibrosis in the context of fibrosing colonopathy

    Drucy S. Borowitz;Richard J. Grand;Peter R. Durie

  • The relationship between biological activity and primary structure of troponin I from white skeletal muscle of the rabbit.

    H Syska;J M Wilkinson;R J A Grand;S V Perry

  • Vitamin D Status in Children and Young Adults With Inflammatory Bowel Disease

    Helen M. Pappa;Catherine M. Gordon;Tracee M. Saslowsky;Anna Zholudev

  • Acylation of viral and eukaryotic proteins.

    R J A Grand

  • Nutritional basis of growth failure in children and adolescents with Crohn's disease.

    Drew G. Kelts;Richard J. Grand;Grace Shen;John B. Watkins

  • The biochemistry of ras p21.

    R J A Grand;D Owen

  • Impaired intestinal iron absorption in Crohn's disease correlates with disease activity and markers of inflammation

    Gaith Semrin;Douglas S. Fishman;Athos Bousvaros;Anna Zholudev

  • Report on the vitamin D status of adult and pediatric patients with inflammatory bowel disease and its significance for bone health and disease

    Helen M. Pappa;Helen M. Pappa;Richard J. Grand;Richard J. Grand;Catherine M. Gordon;Catherine M. Gordon

Frequent Co-Authors

Subra Kugathasan
Subra Kugathasan Emory University
Anne M. Griffiths
Anne M. Griffiths University of Toronto
David R. Mack
David R. Mack University of Ottawa
Jeffrey S. Hyams
Jeffrey S. Hyams University of Connecticut
S. V. Perry
S. V. Perry University of Birmingham
Mark J. Daly
Mark J. Daly Massachusetts General Hospital
Joel N. Hirschhorn
Joel N. Hirschhorn Boston Children's Hospital
Deborah P. Waber
Deborah P. Waber Boston Children's Hospital
Dwight E. Matthews
Dwight E. Matthews University of Vermont
Paul Matsudaira
Paul Matsudaira National University of Singapore

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