World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
76
Citations
23079
World Ranking
18728
National Ranking
55

Ian M. Gralnek 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 Ian M. Gralnek 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: 332 publications — 24th percentile

24% of scientists in this discipline score the same or lower.

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

Ian M. Gralnek 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 Ian M. Gralnek 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: 76 D-Index — 8th percentile

8% of scientists in this discipline score the same or lower.

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

Overview

Ian M. Gralnek is affiliated with the Technion - Israel Institute of Technology in Israel. Their research primarily focuses on the field of Medicine, with extensive work in Surgery, Gastroenterology, Oncology, Pulmonary and Respiratory Medicine, and Epidemiology.

The main topics covered in their work include gastrointestinal bleeding diagnosis and treatment, colorectal cancer screening and detection, esophageal and gastrointestinal pathology, gastrointestinal disorders and treatments, gastric cancer management and outcomes, gastroesophageal reflux and treatments, and inflammatory bowel disease.

Frequent publication venues for Ian M. Gralnek are:

  • Endoscopy
  • Gastroenterology
  • Gastrointestinal Endoscopy
  • Obesity Surgery
  • Endoscopy International Open

Selected recent papers authored or co-authored by Ian M. Gralnek include:

  • Endoscopic diagnosis and management of nonvariceal upper gastrointestinal hemorrhage (NVUGIH): European Society of Gastrointestinal Endoscopy (ESGE) Guideline - Update 2021 (2021), published in Endoscopy
  • ESGE and ESGENA Position Statement on gastrointestinal endoscopy and the COVID-19 pandemic (2020), published in Endoscopy
  • Endoscopic diagnosis and management of esophagogastric variceal hemorrhage: European Society of Gastrointestinal Endoscopy (ESGE) Guideline (2022), published in Endoscopy

Frequent co-authors with whom Ian M. Gralnek has collaborated extensively include:

  • Cesare Hassan
  • Mário Dinis-Ribeiro
  • Raf Bisschops
  • Halim Awadie
  • Helmut Messmann

Best Publications

  • Colorectal polypectomy and endoscopic mucosal resection (EMR): European Society of Gastrointestinal Endoscopy (ESGE) Clinical Guideline

    Monika Ferlitsch;Alan Moss;Cesare Hassan;Pradeep Bhandari

  • The impact of irritable bowel syndrome on health-related quality of life.

    Ian M. Gralnek;Ron D. Hays;Ron D. Hays;Amy Kilbourne;Bruce Naliboff

  • Diagnosis and management of nonvariceal upper gastrointestinal hemorrhage: European Society of Gastrointestinal Endoscopy (ESGE) Guideline

    Ian M. Gralnek;Ian M. Gralnek;Jean Marc Dumonceau;Ernst J. Kuipers;Angel Lanas

  • Video capsule endoscopy to prospectively assess small bowel injury with celecoxib, naproxen plus omeprazole, and placebo

    Jay L. Goldstein;Glenn M. Eisen;Blair Lewis;Ian M. Gralnek

  • Small-bowel capsule endoscopy and device-assisted enteroscopy for diagnosis and treatment of small-bowel disorders: European Society of Gastrointestinal Endoscopy (ESGE) Clinical Guideline.

    Marco Pennazio;Cristiano Spada;Rami Eliakim;Martin Keuchel

  • Evaluation of the PillCam Colon Capsule in the Detection of Colonic Pathology: Results of the First Multicenter, Prospective, Comparative Study

    R. Eliakim;Z. Fireman;I. M. Gralnek;K. Yassin

  • Management of Acute Bleeding from a Peptic Ulcer

    Ian M. Gralnek;Alan N. Barkun;Marc Bardou

  • ACG Clinical Guideline: Management of Patients With Acute Lower Gastrointestinal Bleeding

    Lisa L Strate;Ian M Gralnek

  • Endoscopy in patients on antiplatelet or anticoagulant therapy, including direct oral anticoagulants: British Society of Gastroenterology (BSG) and European Society of Gastrointestinal Endoscopy (ESGE) guidelines.

    Andrew M. Veitch;Geoffroy Vanbiervliet;Anthony H. Gershlick;Christian Boustiere

  • The clinical and economic value of a short course of omeprazole in patients with noncardiac chest pain

    Ronnie Fass;M.Brian Fennerty;Joshua J. Ofman;Ian M. Gralnek

  • Development of a capsule endoscopy scoring index for small bowel mucosal inflammatory change

    I. M. Gralnek;R. Defranchis;E. Seidman;J. A. Leighton

  • Bowel preparation for colonoscopy: European Society of Gastrointestinal Endoscopy (ESGE) Guideline - Update 2019.

    Cesare Hassan;James East;Franco Radaelli;Cristiano Spada

  • Management of Nonvariceal Upper Gastrointestinal Bleeding: Guideline Recommendations From the International Consensus Group.

    Alan N. Barkun;Majid Almadi;Ernst J. Kuipers;Loren Laine

  • ESGE and ESGENA Position Statement on gastrointestinal endoscopy and the COVID-19 pandemic.

    Ian M. Gralnek;Cesare Hassan;Ulrike Beilenhoff;Giulio Antonelli

  • Endoscopic diagnosis and management of nonvariceal upper gastrointestinal hemorrhage (NVUGIH): European Society of Gastrointestinal Endoscopy (ESGE) Guideline - Update 2021.

    Ian M. Gralnek;Ian M. Gralnek;Adrian J. Stanley;A. John Morris;Marine Camus

  • Use of OKT3 is associated with early and severe recurrence of hepatitis C after liver transplantation.

    H. R. Rosen;C. R. Shackleton;L. Higa;I. M. Gralnek

  • Clinical and economic assessment of the omeprazole test in patients with symptoms suggestive of gastroesophageal reflux disease

    Fass R;Ofman Jj;Gralnek Im;Johnson C

  • Standard forward-viewing colonoscopy versus full-spectrum endoscopy: an international, multicentre, randomised, tandem colonoscopy trial

    Ian M Gralnek;Ian M Gralnek;Peter D Siersema;Zamir Halpern;Ori Segol

  • Esomeprazole Versus Other Proton Pump Inhibitors in Erosive Esophagitis: A Meta-Analysis of Randomized Clinical Trials

    Ian M. Gralnek;Gareth S. Dulai;M. Brian Fennerty;Brennan M.R. Spiegel

  • Randomized trial of medical or endoscopic therapy to prevent recurrent ulcer hemorrhage in patients with adherent clots

    Dennis M. Jensen;Thomas O.G. Kovacs;Rome Jutabha;Gustavo A. Machicado;Gustavo A. Machicado

Frequent Co-Authors

Brennan M.R. Spiegel
Brennan M.R. Spiegel Cedars-Sinai Medical Center
Fasiha Kanwal
Fasiha Kanwal Baylor College of Medicine
Alan N. Barkun
Alan N. Barkun McGill University Health Centre
Cesare Hassan
Cesare Hassan Catholic University of America
Ron D. Hays
Ron D. Hays University of California, Los Angeles
Thierry Ponchon
Thierry Ponchon Grenoble Alpes University
Basil S. Lewis
Basil S. Lewis Technion – Israel Institute of Technology
Jean-Marc Dumonceau
Jean-Marc Dumonceau Geneva College
Peter D. Siersema
Peter D. Siersema Radboud University

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