World's Best Scientists 2026 revealed!
Kazuaki Chayama

Kazuaki Chayama

Award Badge
Medicine
Japan
2023

D-Index & Metrics

Medicine

D-Index
144
Citations
89232
World Ranking
1432
National Ranking
27

Kazuaki Chayama 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 Kazuaki Chayama 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: 1,925 publications — 100th percentile

100% of scientists in this discipline score the same or lower.

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

Kazuaki Chayama 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 Kazuaki Chayama 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: 144 D-Index — 93rd percentile

93% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2023 - Research.com Medicine in Japan Leader Award

Overview

Kazuaki Chayama is affiliated with Hiroshima University in Japan. Their research primarily focuses on Medicine, contributing extensively to the subfields of Hepatology, Epidemiology, Cardiology and Cardiovascular Medicine, Surgery, and Pulmonary and Respiratory Medicine.

Their work has been published frequently in Scientific Reports, Hepatology Research, Journal of Gastroenterology, Hypertension Research, and BMC Gastroenterology.

The main topics covered in Chayama's research include:

  • Liver Disease Diagnosis and Treatment
  • Hepatitis C virus research
  • Hepatitis B Virus Studies
  • Hepatocellular Carcinoma Treatment and Prognosis
  • Cardiovascular Health and Disease Prevention
  • Gastric Cancer Management and Outcomes
  • Liver Disease and Transplantation

Among recent publications are:

  • Large-scale genome-wide association study in a Japanese population identifies novel susceptibility loci across different diseases, 2020, Nature Genetics
  • Evidence-based clinical practice guidelines for Liver Cirrhosis 2020, 2021, Journal of Gastroenterology
  • Evidence-based clinical practice guidelines for nonalcoholic fatty liver disease/nonalcoholic steatohepatitis 2020, 2021, Journal of Gastroenterology
  • Evidence-based clinical practice guidelines for liver cirrhosis 2020, 2021, Hepatology Research
  • Evidence-based clinical practice guidelines for nonalcoholic fatty liver disease/nonalcoholic steatohepatitis 2020, 2021, Hepatology Research

Frequent co-authors of Kazuaki Chayama include:

  • Hiroshi Aikata (66 co-authored works)
  • Michio Imamura (54 co-authored works)
  • Takashi Nakahara (45 co-authored works)
  • Masataka Tsuge (45 co-authored works)
  • Tomokazu Kawaoka (42 co-authored works)

Best Publications

  • Pan-cancer analysis of whole genomes

    Peter J. Campbell;Gad Getz;Jan O. Korbel;Joshua M. Stuart

  • A proposed system for the nomenclature of hepatitis C viral genotypes

    P Simmonds;A Alberti;H J Alter;F Bonino

  • A multivariate analysis of risk factors for hepatocellular carcinogenesis: A prospective observation of 795 patients with viral and alcoholic cirrhosis

    M D Kenji Ikeda;Satoshi Saitoh;Isao Koida;Yasuji Arase

  • Individual patient data meta-analysis of controlled attenuation parameter (CAP) technology for assessing steatosis

    Thomas Karlas;David Petroff;Magali Sasso;Jian Gao Fan

  • Whole-genome sequencing of liver cancers identifies etiological influences on mutation patterns and recurrent mutations in chromatin regulators

    Akihiro Fujimoto;Yasushi Totoki;Tetsuo Abe;Keith A. Boroevich

  • Patterns of somatic structural variation in human cancer genomes

    Yilong Li;Nicola D Roberts;Jeremiah A Wala;Jeremiah A Wala;Ofer Shapira;Ofer Shapira

  • Advantage of endoscopic submucosal dissection compared with EMR for early gastric cancer

    Shiro Oka;Shinji Tanaka;Iwao Kaneko;Ritsuo Mouri

  • Effect of Different Intensities of Exercise on Endothelium-Dependent Vasodilation in Humans Role of Endothelium-Dependent Nitric Oxide and Oxidative Stress

    Chikara Goto;Yukihito Higashi;Masashi Kimura;Kensuke Noma

  • Endothelial Function and Oxidative Stress in Renovascular Hypertension

    Yukihito Higashi;Shota Sasaki;Keigo Nakagawa;Hideo Matsuura

  • Factors predictive of response to interferon‐α therapy in hepatitis C virus infection

    Akihito Tsubota;Kazuaki Chayama;Kenji Ikeda;Arase Yasuji

  • Effect of interferon therapy on hepatocellular carcinogenesis in patients with chronic hepatitis type C: A long-term observation study of 1,643 patients using statistical bias correction with proportional hazard analysis.

    Kenji Ikeda;Satoshi Saitoh;Yasuji Arase;Kazuaki Chayama

  • Daclatasvir plus asunaprevir for chronic HCV genotype 1b infection.

    Hiromitsu Kumada;Yoshiyuki Suzuki;Kenji Ikeda;Joji Toyota

  • Prevalence and associated metabolic factors of nonalcoholic fatty liver disease in the general population from 2009 to 2010 in Japan: a multicenter large retrospective study

    Yuichiro Eguchi;Hideyuki Hyogo;Masafumi Ono;Toshihiko Mizuta

  • Endoscopic submucosal dissection for colorectal neoplasia: possibility of standardization.

    Shinji Tanaka;Shiro Oka;Iwao Kaneko;Mayuko Hirata

  • Disease progression and hepatocellular carcinogenesis in patients with chronic viral hepatitis: a prospective observation of 2215 patients

    Kenji Ikeda;Satoshi Saitoh;Yoshiyuki Suzuki;Masahiro Kobayashi

  • A genome-wide association study identifies variants in the HLA-DP locus associated with chronic hepatitis B in Asians

    Yoichiro Kamatani;Sukanya Wattanapokayakit;Hidenori Ochi;Takahisa Kawaguchi

  • Identification of the Niemann-Pick C1–like 1 cholesterol absorption receptor as a new hepatitis C virus entry factor

    Bruno Sainz;Naina Barretto;Danyelle N Martin;Nobuhiko Hiraga

  • Emergence and takeover of YMDD motif mutant hepatitis B virus during long-term lamivudine therapy and re-takeover by wild type after cessation of therapy

    Kazuaki Chayama;Yoshiyuki Suzuki;Masahiro Kobayashi;Mizuho Kobayashi

  • Clinical features and prognosis of patients with extrahepatic metastases from hepatocellular carcinoma.

    Kiminori Uka;Hiroshi Aikata;Shintaro Takaki;Hiroo Shirakawa

  • RAPID COMMUNICATION Daclatasvir Plus Asunaprevir for Chronic HCV Genotype 1b Infection

    Hiromitsu Kumada;Yoshiyuki Suzuki;Kenji Ikeda;Joji Toyota

Frequent Co-Authors

Shinji Tanaka
Shinji Tanaka Hiroshima University
Michio Imamura
Michio Imamura Hiroshima University
Hiromitsu Kumada
Hiromitsu Kumada Fukuoka University
Masaharu Yoshihara
Masaharu Yoshihara Hiroshima University
Yasuhiko Kitadai
Yasuhiko Kitadai Prefectural University of Hiroshima
Yukihito Higashi
Yukihito Higashi Hiroshima University
Kenji Ikeda
Kenji Ikeda University of California, San Francisco
Yasuji Arase
Yasuji Arase University of Yamanashi
Satoshi Saitoh
Satoshi Saitoh Toranomon Hospital
Yoshiyuki Suzuki
Yoshiyuki Suzuki Fukushima Medical University

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