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Medicine
Japan
2025

D-Index & Metrics

Medicine

D-Index
161
Citations
99971
World Ranking
749
National Ranking
12

Masao Omata 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 Masao Omata 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: 1,651 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

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

Masao Omata 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 Masao Omata 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: 161 D-Index — 96th percentile

96% 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

  • 2025 - Research.com Medicine in Japan Leader Award
  • 2023 - Research.com Medicine in Japan Leader Award

Overview

Masao Omata is affiliated with the University of Tokyo in Japan and has contributed extensively to the fields of medicine and biochemistry, genetics, and molecular biology. Their research output includes 335 publications in medicine and 85 in biochemistry-related disciplines.

Omata's work spans various subfields including infectious diseases, epidemiology, oncology, pulmonary and respiratory medicine, and hepatology. The focus of their scientific investigations involves topics such as SARS-CoV-2 and COVID-19 research, cancer genomics and diagnostics, liver disease diagnosis and treatment, SARS-CoV-2 detection and testing, pancreatic and hepatic oncology research, hepatocellular carcinoma treatment and prognosis, and lung cancer treatments and mutations.

Frequent scholarly collaborators include:

  • Yosuke Hirotsu
  • Hitoshi Mochizuki
  • Kenji Amemiya
  • Toshio Oyama
  • Yoshihiro Miyashita

Omata's research has been published most often in the following venues:

  • Hepatology International
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Scientific Reports
  • Journal of Clinical Oncology
  • Cancer Medicine

Some of their notable recent papers include:

  • The Asian Pacific Association for the Study of the Liver clinical practice guidelines for the diagnosis and management of metabolic associated fatty liver disease, 2020, Hepatology International
  • Pre-existing liver disease is associated with poor outcome in patients with SARS CoV2 infection; The APCOLIS Study (APASL COVID-19 Liver Injury Spectrum Study), 2020, Hepatology International
  • Comparison of automated SARS-CoV-2 antigen test for COVID-19 infection with quantitative RT-PCR using 313 nasopharyngeal swabs, including from seven serially followed patients, 2020, International Journal of Infectious Diseases
  • Surgery versus Radiofrequency Ablation for Small Hepatocellular Carcinoma: A Randomized Controlled Trial (SURF Trial), 2021, Liver Cancer
  • APASL clinical practice guideline on hepatitis B reactivation related to the use of immunosuppressive therapy, 2021, Hepatology International

Best Publications

  • Asian-Pacific clinical practice guidelines on the management of hepatitis B: a 2015 update.

    S. K. Sarin;M. Kumar;G. K. Lau;Z. Abbas

  • Correction: Corrigendum: MicroRNA122 is a key regulator of α-fetoprotein expression and influences the aggressiveness of hepatocellular carcinoma

    Kentaro Kojima;Akemi Takata;Charles Vadnais;Motoyuki Otsuka

  • Asia–Pacific clinical practice guidelines on the management of hepatocellular carcinoma: a 2017 update

    Masao Omata;Ann Lii Cheng;Norihiro Kokudo;Masatoshi Kudo

  • Interferon Therapy Reduces the Risk for Hepatocellular Carcinoma: National Surveillance Program of Cirrhotic and Noncirrhotic Patients with Chronic Hepatitis C in Japan

    Haruhiko Yoshida;Yasushi Shiratori;Mitsuhiko Moriyama;Yasuyuki Arakawa

  • Asian-Pacific consensus statement on the management of chronic hepatitis B: a 2012 update.

    Yun Fan Liaw;Jia Horng Kao;Teerha Piratvisuth;Henry Lik Yuen Chan

  • Asian Pacific Association for the Study of the Liver consensus recommendations on hepatocellular carcinoma.

    Masao Omata;Laurentius A. Lesmana;Ryosuke Tateishi;Pei Jer Chen

  • Histologic Improvement of Fibrosis in Patients with Hepatitis C Who Have Sustained Response to Interferon Therapy

    Yasushi Shiratori;Fumio Imazeki;Mitsuhiko Moriyama;Michitami Yano

  • Prospective Cohort Study of Transarterial Chemoembolization for Unresectable Hepatocellular Carcinoma in 8510 Patients

    Kenichi Takayasu;Shigeki Arii;Iwao Ikai;Masao Omata

  • A Randomized Controlled Trial of Radiofrequency Ablation With Ethanol Injection for Small Hepatocellular Carcinoma

    Shuichiro Shiina;Takuma Teratani;Shuntaro Obi;Shinpei Sato

  • Percutaneous radiofrequency ablation for hepatocellular carcinoma. An analysis of 1000 cases.

    Ryosuke Tateishi;Shuichiro Shiina;Takuma Teratani;Shuntaro Obi

  • Standard steroid treatment for autoimmune pancreatitis

    Terumi Kamisawa;Tooru Shimosegawa;Kazuichi Okazaki;Takayoshi Nishino

  • Sunitinib Versus Sorafenib in Advanced Hepatocellular Cancer: Results of a Randomized Phase III Trial

    Ann Lii Cheng;Yoon Koo Kang;Deng Yn Lin;Joong Won Park

  • Radiofrequency Ablation for Hepatocellular Carcinoma: 10-Year Outcome and Prognostic Factors

    Shuichiro Shiina;Ryosuke Tateishi;Toru Arano;Koji Uchino

  • Mutations in the Precore Region of Hepatitis B Virus DNA in Patients with Fulminant and Severe Hepatitis

    Masao Omata;Toshiki Ehata;Osamu Yokosuka;Kazuhiko Hosoda

  • Incidence of hepatocellular carcinoma in chronic Hepatitis B and C: A prospective study of 251 patients

    Susumu Takano;Osamu Yokosuka;Fumio Imazeki;Masami Tagawa

  • Reevaluation of prognostic factors for survival after liver resection in patients with hepatocellular carcinoma in a Japanese nationwide survey.

    Iwao Ikai;Shigeki Arii;Masamichi Kojiro;Takafumi Ichida

  • Asian-Pacific consensus statement on the management of chronic hepatitis B: a 2005 update.

    Yun-Fan Liaw;Nancy Leung;Richard Guan;George K.K. Lau

  • The Asian pacific association for the study of the liver clinical practice guidelines for the diagnosis and management of metabolic associated fatty liver disease

    Mohammed Eslam;Shiv K. Sarin;Vincent Wai Sun Wong;Jian Gao Fan

  • Detection of ras Gene Mutations in Pancreatic Juice and Peripheral Blood of Patients with Pancreatic Adenocarcinoma

    Minoru Tada;Masao Omata;Shigenobu Kawai;Hiromitsu Saisho

  • MicroRNA122 is a key regulator of α-fetoprotein expression and influences the aggressiveness of hepatocellular carcinoma

    Kentaro Kojima;Akemi Takata;Charles Vadnais;Motoyuki Otsuka

Frequent Co-Authors

Takao Kawabe
Takao Kawabe University of Tokyo
Haruhiko Yoshida
Haruhiko Yoshida University of Tokyo
Yasushi Shiratori
Yasushi Shiratori Okayama University
Kazuhiko Koike
Kazuhiko Koike University of Tokyo
Osamu Yokosuka
Osamu Yokosuka Chiba University
Mitsuhiro Fujishiro
Mitsuhiro Fujishiro University of Tokyo
Tsuneo Ikenoue
Tsuneo Ikenoue University of Tokyo
Yasunobu Hirata
Yasunobu Hirata University of Tokyo
Fumio Imazeki
Fumio Imazeki Chiba University
Motoyuki Otsuka
Motoyuki Otsuka University of Tokyo

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