World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 123 3344 3119 1836 1690 737 57652

Richard L. Simmons publications per year

The chart shows the history of publications by Richard L. Simmons between 1957 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Richard L. Simmons published across 69 years, from 1957 to 2025, averaging 11.4 papers a year. Output peaked at 36 publications in 1993. 12 of the 784 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1957 to 2025. Vertical axis: number of publications, 0 to 36. Peak 36 publications in 1993. 1957: 1 publication 1958: 0 publications 1959: 1 publication 1960: 0 publications 1961: 1 publication 1962: 0 publications 1963: 0 publications 1964: 5 publications 1965: 1 publication 1966: 5 publications 1967: 12 publications 1968: 12 publications 1969: 14 publications 1970: 19 publications 1971: 23 publications 1972: 12 publications 1973: 18 publications 1974: 19 publications 1975: 22 publications 1976: 26 publications 1977: 28 publications 1978: 20 publications 1979: 19 publications 1980: 12 publications 1981: 14 publications 1982: 20 publications 1983: 14 publications 1984: 25 publications 1985: 18 publications 1986: 21 publications 1987: 13 publications 1988: 34 publications 1989: 17 publications 1990: 13 publications 1991: 22 publications 1992: 22 publications 1993: 36 publications 1994: 29 publications 1995: 19 publications 1996: 21 publications 1997: 10 publications 1998: 6 publications 1999: 9 publications 2000: 8 publications 2001: 9 publications 2002: 6 publications 2003: 2 publications 2004: 7 publications 2005: 4 publications 2006: 5 publications 2007: 4 publications 2008: 1 publication 2009: 5 publications 2010: 2 publications 2011: 3 publications 2012: 3 publications 2013: 2 publications 2014: 2 publications 2015: 3 publications 2016: 4 publications 2017: 6 publications 2018: 9 publications 2019: 6 publications 2020: 8 publications 2021: 10 publications 2022: 5 publications 2023: 25 publications 2024: 1 publication 2025: 11 publications
1957 2025

784 publications in total across all disciplines

View publications per year as a table
Richard L. Simmons: publications per year, 1957 to 2025
Year Publications
1957 1
1958 0
1959 1
1960 0
1961 1
1962 0
1963 0
1964 5
1965 1
1966 5
1967 12
1968 12
1969 14
1970 19
1971 23
1972 12
1973 18
1974 19
1975 22
1976 26
1977 28
1978 20
1979 19
1980 12
1981 14
1982 20
1983 14
1984 25
1985 18
1986 21
1987 13
1988 34
1989 17
1990 13
1991 22
1992 22
1993 36
1994 29
1995 19
1996 21
1997 10
1998 6
1999 9
2000 8
2001 9
2002 6
2003 2
2004 7
2005 4
2006 5
2007 4
2008 1
2009 5
2010 2
2011 3
2012 3
2013 2
2014 2
2015 3
2016 4
2017 6
2018 9
2019 6
2020 8
2021 10
2022 5
2023 25
2024 1
2025 11
Total 784
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Richard L. Simmons 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 L. Simmons 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, 721–740 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: 737 publications — 84th percentile

84% 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
721–740 259 737
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
1,481–1,500 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
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Richard L. Simmons 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 L. Simmons 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
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Research.com Recognitions

  • Fellow of the Academy of Social Sciences, United Kingdom
  • Fellow of the Academy of Social Sciences, United Kingdom
  • Fellow of the Academy of Social Sciences, United Kingdom

Overview

Richard L. Simmons is affiliated with the University of Pittsburgh in the United States. Their research spans several fields, primarily within Medicine and Immunology and Microbiology, with specialization in subfields such as Immunology, Surgery, Oncology, Endocrinology, Diabetes and Metabolism, and Pulmonary and Respiratory Medicine.

The scientist's work covers multiple research topics, including:

  • Immune cells in cancer
  • Neutrophil, Myeloperoxidase and Oxidative Mechanisms
  • Diabetes Treatment and Management
  • Pancreatic and Hepatic Oncology Research
  • Nanoplatforms for cancer theranostics
  • Immune Response and Inflammation
  • Pharmacology and Obesity Treatment

Selected publications by Richard L. Simmons include:

  • Neutrophil Extracellular Traps Promote T Cell Exhaustion in the Tumor Microenvironment, 2021, Frontiers in Immunology
  • Association Between Preoperative Metformin Exposure and Postoperative Outcomes in Adults With Type 2 Diabetes, 2020, JAMA Surgery
  • Neutrophil Extracellular Traps (NETs) in Cancer Metastasis, 2021, Cancers
  • Long-Term Surgical Complications After Pancreatoduodenectomy: Incidence, Outcomes, and Risk Factors, 2020, Journal of Gastrointestinal Surgery
  • Hepatic Surgical Stress Promotes Systemic Immunothrombosis That Results in Distant Organ Injury, 2020, Frontiers in Immunology

Frequent coauthors with whom Richard L. Simmons has collaborated include:

  • Hamza O. Yazdani (10 joint publications)
  • Samer Tohme (6 joint publications)
  • Christof Kaltenmeier (5 joint publications)
  • David A. Geller (5 joint publications)
  • Mazen S. Zenati (5 joint publications)

The scientist publishes often in venues such as:

  • Research Square (3 publications)
  • Frontiers in Immunology (2 publications)
  • Clinical Transplantation (2 publications)
  • Cancers (1 publication)
  • JAMA Surgery (1 publication)

Richard L. Simmons has been recognized as a Fellow of the Academy of Social Sciences, United Kingdom.

Best Publications

  • Negative inotropic effects of cytokines on the heart mediated by nitric oxide

    Mitchell S. Finkel;Carmine V. Oddis;Timothy D. Jacob;Simon C. Watkins

  • Chemotaxis under agarose: a new and simple method for measuring chemotaxis and spontaneous migration of human polymorphonuclear leukocytes and monocytes.

    Robert D. Nelson;Paul G. Quie;Richard L. Simmons

  • Virus-associated hemophagocytic syndrome: a benign histiocytic proliferation distinct from malignant histiocytosis.

    Robert J. Risdall;Robert W. McKenna;Mark E. Nesbit;William Krivit

  • Molecular cloning and expression of inducible nitric oxide synthase from human hepatocytes.

    D A Geller;C J Lowenstein;R A Shapiro;A K Nussler

  • Cytokines, endotoxin, and glucocorticoids regulate the expression of inducible nitric oxide synthase in hepatocytes.

    D A Geller;A K Nussler;M Di Silvio;C J Lowenstein

  • Fulminant Clostridium difficile: An underappreciated and increasing cause of death and complications

    Ramsey M. Dallal;Brian G. Harbrecht;Arthur J. Boujoukas;Carl A. Sirio

  • Nitrogen oxide levels in patients after trauma and during sepsis.

    Juan B. Ochoa;Anthony O. Udekwu;Timothy R. Billiar;Ronald D. Curran

  • Surgical manipulation of the gut elicits an intestinal muscularis inflammatory response resulting in postsurgical ileus

    Jörg C. Kalff;Wolfgang H. Schraut;Richard L. Simmons;Anthony J. Bauer

  • A randomized, placebo-controlled trial of oral acyclovir for the prevention of cytomegalovirus disease in recipients of renal allografts

    Henry H. Balfour;Beverly A. Chace;Jack T. Stapleton;Richard L. Simmons

  • Epstein-Barr virus-induced B-cell lymphoma after renal transplantation: acyclovir therapy and transition from polyclonal to monoclonal B-cell proliferation.

    D. W. Hanto;G. Frizzera;K. J. Gajl-Peczalska;K. Sakamoto

  • Articular chondrocytes synthesize nitric oxide in response to cytokines and lipopolysaccharide.

    J Stadler;M Stefanovic-Racic;T R Billiar;R D Curran

  • Surgery for Cancer: A Trigger for Metastases

    Samer Tohme;Richard L Simmons;Allan Tsung

  • Neutrophil Extracellular Traps Promote the Development and Progression of Liver Metastases after Surgical Stress

    Samer Tohme;Hamza O. Yazdani;Ahmed B. Al-Khafaji;Alexis P. Chidi

  • Epstein-Barr virus (EBV) induced polyclonal and monoclonal B-cell lymphoproliferative diseases occurring after renal transplantation. Clinical, pathologic, and virologic findings and implications for therapy.

    Douglas W. Hanto;Kazimiera J. Gajl-peczalska;Glauco Frizzera;Diane C. Arthur

  • Hepatocytes produce nitrogen oxides from L-arginine in response to inflammatory products of Kupffer cells.

    R D Curran;T R Billiar;D J Stuehr;K Hofmann

  • Clinical Spectrum of Lymphoproliferative Disorders in Renal Transplant Recipients and Evidence for the Role of Epstein-Barr Virus

    Douglas W. Hanto;Glauco Frizzera;David T. Purtilo;Kiyoshi Sakamoto

  • Epstein-Barr virus, immunodeficiency, and B cell lymphoproliferation.

    Douglas W. Hanto;Glauco Frizzera;Kazimiera J. Gajl-Peczalska;Richard L. Simmons

  • Use of medical emergency team responses to reduce hospital cardiopulmonary arrests

    M A DeVita;R S Braithwaite;R Mahidhara;S Stuart

  • Effect of exogenous and endogenous nitric oxide on mitochondrial respiration of rat hepatocytes.

    J. Stadler;T. R. Billiar;R. D. Curran;D. J. Stuehr

  • Stimulation of the nitric oxide synthase pathway in human hepatocytes by cytokines and endotoxin.

    A K Nussler;M Di Silvio;T R Billiar;R A Hoffman

Frequent Co-Authors

John S. Najarian
John S. Najarian University of Minnesota
David E.R. Sutherland
David E.R. Sutherland University of Minnesota
Timothy R. Billiar
Timothy R. Billiar University of Pittsburgh
Michael West
Michael West Duke University
Nancy L. Ascher
Nancy L. Ascher University of California, San Francisco
Paul S. Russell
Paul S. Russell Harvard University
Phillip K. Peterson
Phillip K. Peterson University of Minnesota
Arthur J. Matas
Arthur J. Matas University of Minnesota
Thomas E. Starzl
Thomas E. Starzl University of Pittsburgh
Frank B. Cerra
Frank B. Cerra University of Minnesota

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