World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
92
Citations
26262
World Ranking
11439
National Ranking
5864

Richard A. Kozarek 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 A. Kozarek 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: 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 publications 1,796+

This scientist: 726 publications — 83rd percentile

83% of scientists in this discipline score the same or lower.

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

Richard A. Kozarek 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 A. Kozarek 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: 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 D-Index 217+

This scientist: 92 D-Index — 45th percentile

45% of scientists in this discipline score the same or lower.

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

Overview

Richard A. Kozarek is affiliated with the Virginia Mason Medical Center in the United States and has a research focus primarily within the field of medicine. Their extensive body of work covers significant subfields including surgery, pulmonary and respiratory medicine, oncology, gastroenterology, and microbiology. The scientist's publications indicate a concentration on both clinical and procedural aspects of medical treatment and diagnosis.

The main topics Richard A. Kozarek explores include:

  • Esophageal and GI Pathology
  • Pancreatic and Hepatic Oncology Research
  • Gallbladder and Bile Duct Disorders
  • Pancreatitis Pathology and Treatment
  • Pediatric Hepatobiliary Diseases and Treatments
  • Gastrointestinal disorders and treatments
  • Gastroesophageal reflux and treatments

Kozarek has contributed frequently to high-impact journals. The most common publication venues for their work are:

  • Gastrointestinal Endoscopy
  • Journal of Clinical Medicine
  • The American Journal of Gastroenterology
  • Surgical Endoscopy
  • UNC Libraries

Collaborations are a visible part of Kozarek's research profile, with frequent coauthors including Rajesh Krishnamoorthi, Shayan Irani, Michael Larsen, Andrew S. Ross, and Joanna K. Law, reflecting a network across related medical and endoscopic research areas.

Selected recent publications that highlight the scope and focus of Kozarek's research are:

  • "EUS-guided versus endoscopic transpapillary gallbladder drainage in high-risk surgical patients with acute cholecystitis: a systematic review and meta-analysis," 2020, Surgical Endoscopy
  • "Effectiveness and safety of EUS-guided choledochoduodenostomy using lumen-apposing metal stents (LAMS): a systematic review and meta-analysis," 2020, Surgical Endoscopy
  • "Endoscopic retrograde cholangiopancreatography: Current practice and future research," 2021, World Journal of Gastrointestinal Endoscopy
  • "Early diagnosis is associated with improved clinical outcomes in benign esophageal perforation: an individual patient data meta-analysis," 2020, Surgical Endoscopy
  • "Efficacy and safety of endoscopic duodenal stent versus endoscopic or surgical gastrojejunostomy to treat malignant gastric outlet obstruction: systematic review and meta-analysis," 2022, Endoscopy International Open

Best Publications

  • Methotrexate Induces Clinical and Histologic Remission in Patients with Refractory Inflammatory Bowel Disease

    Richard A. Kozarek;David J. Patterson;Martin D. Gelfand;V. Alin Botoman

  • The gastroesophageal flap valve: in vitro and in vivo observations.

    Lucius D. Hill;Richard A. Kozarek;Stefan J.M. Kraemer;Ralph W. Aye

  • International consensus guidelines for endoscopic papillary large-balloon dilation

    Tae Hyeon Kim;Jin Hong Kim;Dong Wan Seo;Dong Ki Lee

  • Role of Esophageal Stents in Benign and Malignant Diseases

    Prateek Sharma;Richard Kozarek

  • Endoscopic transpapillary therapy for disrupted pancreatic duct and peripancreatic fluid collections

    Richard A. Kozarek;Terrence J. Ball;David J. Patterson;Patrick C. Freeny

  • Pancreatic stents can induce ductal changes consistent with chronic pancreatitis.

    R.A. Kozarek

  • What is the learning curve associated with double-balloon enteroscopy? Technical details and early experience in 6 U.S. tertiary care centers

    Shahab Mehdizadeh;Andrew Ross;Lauren Gerson;Jonathan Leighton

  • A multicenter, U.S. experience of single-balloon, double-balloon, and rotational overtube–assisted enteroscopy ERCP in patients with surgically altered pancreaticobiliary anatomy (with video)

    Raj J. Shah;Maximiliano Smolkin;Roy Yen;Andrew Ross

  • Development of a new access device for transgastric surgery.

    Lee L. Swanstrom;Richard Kozarek;Pankaj J. Pasricha;Steven Gross

  • Interferon-based adjuvant chemoradiation therapy after pancreaticoduodenectomy for pancreatic adenocarcinoma

    Vincent J Picozzi;Richard A Kozarek;L.William Traverso

  • Endoscopic drainage of pancreatic pseudocysts

    R.A. Kozarek;C.M. Brayko;J. Harlan;R.A. Sanowski

  • Characteristics of biliary tract complications during laparoscopic cholecystectomy: a multi-institutional study.

    Michael S. Woods;L.William Traverso;Richard A. Kozarek;Jane Tsao

  • Effect of Endoscopic Sphincterotomy for Suspected Sphincter of Oddi Dysfunction on Pain-Related Disability Following Cholecystectomy: The EPISOD Randomized Clinical Trial

    Peter B. Cotton;Valerie Durkalski;Joseph Romagnuolo;Qi Pauls

  • Computed tomography severity index is a predictor of outcomes for severe pancreatitis.

    E J Simchuk;L W Traverso;Y Nukui;R A Kozarek

  • Metallic self-expanding stent application in the upper gastrointestinal tract: caveats and concerns.

    R.A. Kozarek;T.J. Ball;D.J. Patterson

  • Laparoscopy–assisted versus balloon enteroscopy–assisted ERCP in bariatric post–Roux-en-Y gastric bypass patients

    Mitchal A. Schreiner;Lily Chang;Michael Gluck;Shayan Irani

  • Double Balloon Enteroscopy Detects Small Bowel Mass Lesions Missed by Capsule Endoscopy

    Andrew Ross;Andrew Ross;Shahab Mehdizadeh;Jeffrey Tokar;Jonathan A. Leighton

  • Intraductal neoplasms of the pancreas

    L. William Traverso;Elizabeth A. Peralta;John A. Ryan;Richard A. Kozarek

  • Esophagectomy--it's not just about mortality anymore: standardized perioperative clinical pathways improve outcomes in patients with esophageal cancer.

    Donald E. Low;Sonia Kunz;Drew Schembre;Henry Otero

  • Portal colopathy: prospective study of colonoscopy in patients with portal hypertension.

    R.A. Kozarek;V.A. Botoman;J.E. Bredfeldt;J.M. Roach

Frequent Co-Authors

Todd H. Baron
Todd H. Baron University of North Carolina at Chapel Hill
Anthony Lembo
Anthony Lembo Beth Israel Deaconess Medical Center
David L. Carr-Locke
David L. Carr-Locke NewYork–Presbyterian Hospital
Robert H. Hawes
Robert H. Hawes Orlando Health
Jacques Devière
Jacques Devière Université Libre de Bruxelles
Stuart Sherman
Stuart Sherman Indiana University
Bret T. Petersen
Bret T. Petersen Mayo Clinic
Lee L. Swanstrom
Lee L. Swanstrom Institute of Image-Guided Surgery

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