World's Best Scientists 2026 revealed!
Robert A. Rizza

Robert A. Rizza

D-Index & Metrics

Medicine

D-Index
112
Citations
71736
World Ranking
5050
National Ranking
2735

Robert A. Rizza 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 Robert A. Rizza 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: 421 publications — 43rd percentile

43% of scientists in this discipline score the same or lower.

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

Robert A. Rizza 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 Robert A. Rizza 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: 112 D-Index — 75th percentile

75% 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

  • Member of the Association of American Physicians
  • Member of the Association of American Physicians

Overview

Robert A. Rizza is affiliated with the Mayo Clinic in the United States. Their research primarily encompasses the field of Medicine with a specialization in Surgery, Endocrinology, Diabetes and Metabolism, Molecular Biology, Genetics, and Pathology and Forensic Medicine.

The scientist's work focuses on a range of topics including pancreatic function and diabetes, diabetes management and research, diabetes treatment and management, diabetes and associated disorders, scoliosis diagnosis and treatment, diabetes, cardiovascular risks and lipoproteins, and the intersection of metabolism, diabetes, and cancer.

Recent notable publications include:

  • Identification of osteoclast-osteoblast coupling factors in humans reveals links between bone and energy metabolism (2020) - Nature Communications
  • Fasting glucagon concentrations are associated with longitudinal decline of β-cell function in non-diabetic humans (2020) - Metabolism
  • Diabetes-associated genetic variation in TCF7L2 alters pulsatile insulin secretion in humans (2020) - JCI Insight
  • Insulin Pulse Characteristics and Insulin Action in Non-diabetic Humans (2021) - The Journal of Clinical Endocrinology & Metabolism
  • The relationship between insulin and glucagon concentrations in non-diabetic humans (2022) - Physiological Reports

Frequent collaborators of Robert A. Rizza include Adrian Vella, Aleksey V. Matveyenko, Chiara Dalla Man, Marcello C. Laurenti, and Claudio Cobelli. These coauthors have contributed multiple publications in joint research efforts.

The scientist has published regularly in venues such as Diabetes, Nature Communications, Metabolism, JCI Insight, and The Journal of Clinical Endocrinology & Metabolism.

Among professional recognitions, Robert A. Rizza is a member of the Association of American Physicians.

Best Publications

  • Report of the expert committee on the diagnosis and classification of diabetes mellitus

    James R. Gavin;K. G M M Alberti;Mayer B. Davidson;Ralph A. DeFronzo

  • β-Cell Deficit and Increased β-Cell Apoptosis in Humans With Type 2 Diabetes

    Alexandra E. Butler;Juliette Janson;Susan Bonner-Weir;Robert A Ritzel

  • Follow-up report on the diagnosis of diabetes mellitus.

    Saul Genuth;K. G M M Alberti;Peter Bennett;John Buse

  • Meal Simulation Model of the Glucose-Insulin System

    C.D. Man;R.A. Rizza;C. Cobelli

  • Dose-response characteristics for effects of insulin on production and utilization of glucose in man

    Robert A. Rizza;Lawrence J. Mandarino;John E. Gerich

  • Influence of body fat distribution on free fatty acid metabolism in obesity

    M. D. Jensen;M. W. Haymond;R. A. Rizza;Philip Cryer

  • Cortisol-Induced Insulin Resistance in Man: Impaired Suppression of Glucose Production and Stimulation of Glucose Utilization due to a Postreceptor Defect of Insulin Action

    Robert A. Rizza;Lawrence J. Mandarino;John E. Gerich

  • Impact of Aerobic Exercise Training on Age-Related Changes in Insulin Sensitivity and Muscle Oxidative Capacity

    Kevin R. Short;Janet L. Vittone;Maureen L. Bigelow;David N. Proctor

  • DHEA in elderly women and DHEA or testosterone in elderly men

    K. Sreekumaran Nair;Robert A. Rizza;Peter O'brien;Ketan Dhatariya

  • β-Cell Replication Is the Primary Mechanism Subserving the Postnatal Expansion of β-Cell Mass in Humans

    Juris J. Meier;Alexandra E. Butler;Yoshifumi Saisho;Travis Monchamp

  • Intensive intraoperative insulin therapy versus conventional glucose management during cardiac surgery: a randomized trial.

    Gunjan Y. Gandhi;Gregory A. Nuttall;Martin D. Abel;Charles J. Mullany

  • Intraoperative hyperglycemia and perioperative outcomes in cardiac surgery patients

    Gunjan Y. Gandhi;Gregory A. Nuttall;Martin D. Abel;Charles J. Mullany

  • Sustained beta cell apoptosis in patients with long-standing type 1 diabetes: indirect evidence for islet regeneration?

    J. J. Meier;A. Bhushan;A. E. Butler;R. A. Rizza

  • Lack of suppression of glucagon contributes to postprandial hyperglycemia in subjects with type 2 diabetes mellitus.

    Pankaj Shah;Adrian Vella;Ananda Basu;Rita Basu

  • Role of Glucagon, Catecholamines, and Growth Hormone in Human Glucose Counterregulation: EFFECTS OF SOMATOSTATIN AND COMBINED α- AND β-ADRENERGIC BLOCKADE ON PLASMA GLUCOSE RECOVERY AND GLUCOSE FLUX RATES AFTER INSULIN-INDUCED HYPOGLYCEMIA

    Robert A. Rizza;Philip E. Cryer;John E. Gerich

  • Effects of Growth Hormone on Insulin Action in Man: Mechanisms of Insulin Resistance, Impaired Suppression of Glucose Production, and Impaired Stimulation of Glucose Utilization

    Robert A Rizza;Lawrence J Mandarino;John E Gerich

  • High Expression Rates of Human Islet Amyloid Polypeptide Induce Endoplasmic Reticulum Stress–Mediated β-Cell Apoptosis, a Characteristic of Humans With Type 2 but Not Type 1 Diabetes

    Chang Jiang Huang;Chia Yu Lin;Leena Haataja;Tatyana Gurlo

  • Effects of glucocorticoids on carbohydrate metabolism

    M. Mcmahon;J. Gerich;R. Rizza

  • Mechanisms of the Age-Associated Deterioration in Glucose Tolerance: Contribution of Alterations in Insulin Secretion, Action, and Clearance

    Rita Basu;Elena Breda;Ann L. Oberg;Claudia C. Powell

  • Preventing Cardiovascular Disease and Diabetes A call to action from the American Diabetes Association and the American Heart Association

    Robert H. Eckel;Richard Kahn;Rose Marie Robertson;Robert A. Rizza

Frequent Co-Authors

Claudio Cobelli
Claudio Cobelli University of Padua
Peter C. Butler
Peter C. Butler University of California, Los Angeles
Morey W. Haymond
Morey W. Haymond Baylor College of Medicine
Peter C. O'Brien
Peter C. O'Brien Mayo Clinic
Lawrence J. Mandarino
Lawrence J. Mandarino University of Arizona
Bernard R. Landau
Bernard R. Landau Case Western Reserve University

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