World's Best Scientists 2026 revealed!
Keizo Sugimachi

Keizo Sugimachi

Award Badge
Medicine
Japan
2023

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 123 3325 3100 60 57 1470 61157

Keizo Sugimachi publications per year

The chart shows the history of publications by Keizo Sugimachi between 1971 and 2020, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Keizo Sugimachi published across 50 years, from 1971 to 2020, averaging 29.4 papers a year. Output peaked at 104 publications in 1995. 2 of the 1,471 publications appeared in the last two years.

No. of publications
25 50 75 100
Bar chart. Horizontal axis: year, 1971 to 2020. Vertical axis: number of publications, 0 to 104. Peak 104 publications in 1995. 1971: 1 publication 1972: 0 publications 1973: 0 publications 1974: 1 publication 1975: 2 publications 1976: 3 publications 1977: 0 publications 1978: 4 publications 1979: 3 publications 1980: 5 publications 1981: 5 publications 1982: 9 publications 1983: 9 publications 1984: 16 publications 1985: 18 publications 1986: 22 publications 1987: 38 publications 1988: 47 publications 1989: 59 publications 1990: 87 publications 1991: 72 publications 1992: 77 publications 1993: 85 publications 1994: 98 publications 1995: 104 publications 1996: 84 publications 1997: 81 publications 1998: 71 publications 1999: 68 publications 2000: 88 publications 2001: 95 publications 2002: 104 publications 2003: 36 publications 2004: 17 publications 2005: 26 publications 2006: 3 publications 2007: 2 publications 2008: 6 publications 2009: 1 publication 2010: 1 publication 2011: 0 publications 2012: 0 publications 2013: 3 publications 2014: 2 publications 2015: 4 publications 2016: 6 publications 2017: 6 publications 2018: 0 publications 2019: 1 publication 2020: 1 publication
1971 2020

1,471 publications in total across all disciplines

View publications per year as a table
Keizo Sugimachi: publications per year, 1971 to 2020
Year Publications
1971 1
1972 0
1973 0
1974 1
1975 2
1976 3
1977 0
1978 4
1979 3
1980 5
1981 5
1982 9
1983 9
1984 16
1985 18
1986 22
1987 38
1988 47
1989 59
1990 87
1991 72
1992 77
1993 85
1994 98
1995 104
1996 84
1997 81
1998 71
1999 68
2000 88
2001 95
2002 104
2003 36
2004 17
2005 26
2006 3
2007 2
2008 6
2009 1
2010 1
2011 0
2012 0
2013 3
2014 2
2015 4
2016 6
2017 6
2018 0
2019 1
2020 1
Total 1,471
Download as CSV

Keizo Sugimachi 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 Keizo Sugimachi sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 86 bars. Horizontal axis: publications, 101–120 to 1,796+. Vertical axis: number of scientists, 0 to 922. Most scientists, 922, have 341–360 publications. The last bar groups every scientist with 1,796 publications or more. The highlighted bar, 1,461–1,480 publications, is where this scientist sits. 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
101–120 publications 1,796+

This scientist: 1,470 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.

View publications distribution as a table
Number of Medicine scientists by publication count, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
Publications Scientists This scientist
101–120 5
121–140 26
141–160 73
161–180 155
181–200 230
201–220 363
221–240 487
241–260 545
261–280 722
281–300 768
301–320 834
321–340 895
341–360 922
361–380 838
381–400 861
401–420 918
421–440 806
441–460 771
461–480 751
481–500 713
501–520 617
521–540 610
541–560 537
561–580 504
581–600 509
601–620 396
621–640 386
641–660 371
661–680 340
681–700 336
701–720 307
721–740 259
741–760 230
761–780 228
781–800 217
801–820 204
821–840 186
841–860 177
861–880 155
881–900 139
901–920 145
921–940 116
941–960 133
961–980 91
981–1,000 96
1,001–1,020 77
1,021–1,040 70
1,041–1,060 63
1,061–1,080 77
1,081–1,100 49
1,101–1,120 54
1,121–1,140 49
1,141–1,160 51
1,161–1,180 35
1,181–1,200 39
1,201–1,220 26
1,221–1,240 37
1,241–1,260 36
1,261–1,280 27
1,281–1,300 32
1,301–1,320 28
1,321–1,340 17
1,341–1,360 30
1,361–1,380 28
1,381–1,400 17
1,401–1,420 21
1,421–1,440 15
1,441–1,460 12
1,461–1,480 12 1,470
1,481–1,500 18
1,501–1,520 14
1,521–1,540 17
1,541–1,560 15
1,561–1,580 6
1,581–1,600 2
1,601–1,620 12
1,621–1,640 11
1,641–1,660 8
1,661–1,680 5
1,681–1,700 5
1,701–1,720 10
1,721–1,740 12
1,741–1,760 14
1,761–1,780 6
1,781–1,795 5
1,796+ 100
Download as CSV

Keizo Sugimachi 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 Keizo Sugimachi sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 75 bars. Horizontal axis: D-Index, 70–71 to 217+. Vertical axis: number of scientists, 0 to 1,027. Most scientists, 1,027, have 82–83 D-Index. The last bar groups every scientist with 217 D-Index or more. The highlighted bar, 122–123 D-Index, is where this scientist sits. 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
70–71 D-Index 217+

This scientist: 123 D-Index — 84th percentile

84% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Medicine scientists by D-index, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
D-Index Scientists This scientist
70–71 226
72–73 391
74–75 574
76–77 730
78–79 891
80–81 972
82–83 1,027
84–85 1,003
86–87 960
88–89 970
90–91 922
92–93 839
94–95 808
96–97 779
98–99 668
100–101 611
102–103 630
104–105 513
106–107 541
108–109 445
110–111 429
112–113 399
114–115 393
116–117 318
118–119 302
120–121 287
122–123 255 123
124–125 256
126–127 252
128–129 230
130–131 179
132–133 168
134–135 163
136–137 159
138–139 134
140–141 134
142–143 118
144–145 109
146–147 106
148–149 74
150–151 79
152–153 80
154–155 87
156–157 57
158–159 74
160–161 69
162–163 60
164–165 53
166–167 39
168–169 42
170–171 32
172–173 39
174–175 40
176–177 28
178–179 19
180–181 23
182–183 31
184–185 18
186–187 20
188–189 22
190–191 13
192–193 21
194–195 12
196–197 12
198–199 14
200–201 15
202–203 13
204–205 10
206–207 8
208–209 4
210–211 12
212–213 11
214–215 10
216 4
217+ 98
Download as CSV

Research.com Recognitions

  • 2023 - Research.com Medicine in Japan Leader Award

Overview

Keizo Sugimachi is affiliated with Kyushu University in Japan and works primarily in the field of medicine, with a specialization in surgery. Their research contributions are focused mainly on congenital diaphragmatic hernia studies.

The scientist has published research in recognized venues such as the International Journal of Surgery Case Reports. One identified paper authored by Sugimachi was published in 2020, titled "Surgical treatment of Bochodalek hernia incarcerated into the extra-pleural space: A rare case report".

Their collaborations include work with several frequent co-authors, which include:

  • Akira Haro
  • Hiroyuki Kawano
  • Takayuki Hamatsu
  • Taketoshi Suehiro
  • Makiko Koike

Keizo Sugimachi's academic output encompasses topics in congenital diaphragmatic hernia studies, which reflects a specialized research interest within their broader surgical focus.

Best Publications

  • Laparoscopy-assisted Billroth I gastrectomy.

    Kitano S;Iso Y;Moriyama M;Sugimachi K

  • Late phase II study of novel oral fluoropyrimidine anticancer drug S-1 (1 M tegafur–0.4 M gimestat–1 M otastat potassium) in advanced gastric cancer patients

    Y Sakata;A Ohtsu;N Horikoshi;K Sugimachi

  • Postoperative liver failure after major hepatic resection for hepatocellular carcinoma in the modern era with special reference to remnant liver volume

    Ken Shirabe;Mitsuo Shimada;Tomonobu Gion;Hirofumi Hasegawa

  • High expression of vascular endothelial growth factor is associated with liver metastasis and a poor prognosis for patients with ductal pancreatic adenocarcinoma

    Yousuke Seo;Hideo Baba M.D.;Toshiro Fukuda M.D.;Masaki Takashima M.D.

  • Expression and Differential Intracellular Localization of Two Major Forms of Human 8-Oxoguanine DNA Glycosylase Encoded by Alternatively Spliced OGG1 mRNAs

    Kenichi Nishioka;Toshio Ohtsubo;Hisanobu Oda;Toshiyuki Fujiwara

  • Bile Leakage After Hepatic Resection

    Yo Ichi Yamashita;Takayuki Hamatsu;Tatsuya Rikimaru;Shinji Tanaka

  • Factors linked to early recurrence of small hepatocellular carcinoma after hepatectomy: Univariate and multivariate analyses

    Ken Shirabe;Takashi Kanematsu;Takashi Matsumata;Eisuke Adachi

  • Evaluation of extensive lymph node dissection for carcinoma of the stomach.

    Yoshifumi Kodama;Keizo Sugimachi;Kazuhiko Soejima;Toshimitsu Matsusaka

  • Operative morbidity of living liver donors in Japan.

    Koji Umeshita;Kenji Fujiwara;Kendo Kiyosawa;Masatoshi Makuuchi

  • p27 expression and gastric carcinoma.

    Masaki Mori;Koshi Mimori;Takeshi Shiraishi;Shinji Tanaka

  • Risk factors for intrahepatic recurrence in human small hepatocellular carcinoma.

    Eisuke Adachi;Takashi Maeda;Takashi Matsumata;Ken Shirabe

  • Biologic significance of angiopoietin-2 expression in human hepatocellular carcinoma

    Shinji Tanaka;Masaki Mori;Yoshihiro Sakamoto;Masatoshi Makuuchi

  • Early experiences of endoscopic procedures in general surgery assisted by a computer-enhanced surgical system

    M. Hashizume;M. Shimada;M. Tomikawa;Y. Ikeda

  • Limited hepatic resection effective for selected cirrhotic patients with primary liver cancer.

    Takashi Kanematsu;Kenji Takenaka;Takashi Matsumata;Toshiya Furuta

  • Clinical significance of occult micrometastasis in lymph nodes from patients with early gastric cancer who died of recurrence

    Yoshihiko Maehara;Tatsuo Oshiro;Kazuya Endo;Hideo Baba

  • Angiogenic gene therapy for experimental critical limb ischemia: Acceleration of limb loss by overexpression of vascular endothelial growth factor 165 but not of fibroblast growth factor-2

    Ichiro Masaki;Yoshikazu Yonemitsu;Akihisa Yamashita;Shihoko Sata

  • Ischemic injury in liver transplantation: Difference in injury sites between warm and cold ischemia in rats

    Tetsuo Ikeda;Katsuhiko Yanaga;Keiji Kishikawa;Saburo Kakizoe

  • Significance of preoperative elevation of serum C-reactive protein as an indicator for prognosis in colorectal cancer

    Tadahiro Nozoe;Takashi Matsumata;Masayuki Kitamura;Keizo Sugimachi

  • Results of 280 Liver Resections for Hepatocellular Carcinoma

    Kenji Takenaka;Naoyuki Kawahara;Kazuharu Yamamoto;Kiyoshi Kajiyama

  • Prognosis of Recurrent Hepatocellular Carcinoma: A 10-Year Surgical Experience in Japan

    Mitsuo Shimada;Kenji Takenaka;Tomonobu Gion;Yuh Fujiwara

Frequent Co-Authors

Yoshihiko Maehara
Yoshihiko Maehara Kyushu University
Masaki Mori
Masaki Mori Kyushu University
Mitsuo Shimada
Mitsuo Shimada University of Tokushima
Hiroyuki Kuwano
Hiroyuki Kuwano Gunma University
Hideo Baba
Hideo Baba Kumamoto University
Ken Shirabe
Ken Shirabe Gunma University
Seigo Kitano
Seigo Kitano Oita University
Kikuo Nomoto
Kikuo Nomoto Kyushu University
Akinobu Taketomi
Akinobu Taketomi Hokkaido University
Tetsuya Mitsudomi
Tetsuya Mitsudomi Kindai University

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 career in medicine doesn’t always mean attending a traditional campus. Today, there are many HIM degree online programs that prepare students for vital roles in health information management. This pathway is ideal for those interested in the intersection of healthcare, technology, and administration.

Another in-demand field is medical billing and coding. Many students find affordable and flexible online medical billing and coding courses that allow them to start a healthcare career quickly, with options to work remotely.

For aspiring advanced practice nurses, finding the cheapest np school online can make pursuing a nurse practitioner degree more accessible and cost-effective. These programs help nurses take on greater responsibilities in clinical settings.

If you’re looking to enter the nursing profession, discover what is the cheapest online college for nursing? Many colleges now offer accredited online nursing programs that provide a flexible and affordable path to licensure.

Best Scientists Citing Keizo Sugimachi

Trending Scientists

Recently Published Articles