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Organizational Structure

OUTCOMES RESEARCH Consortium is a consortium of more than 100 collaborating investigators. The administrative center for the non-profit consortium is the Department of Outcomes Research at the Cleveland Clinic. However, its members hold individual appointments at more than 20 universities.


Major Regional Directors


Daniel I. Sessler, M.D.


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:: Download a copy of Dr. Sessler's curriculum vitae. (PDF / 9.7MB)
:: Download a high-resolution photograph of Dr. Sessler. (JPG/340KB)
:: MedLine Citations
:: Article about Dr. Sessler in NIH Findings
:: Ximena Valdes, M.D. (Dr. Sessler's wife)
      Marcela Valdes, M.A. (daughter)
      Claudia Valdes, M.A. (daughter)
:: Andrew Sessler, Ph.D. (Dr. Sessler's father)
:: Jonathan Sessler, Ph.D. (Dr. Sessler's brother)
:: Ruth Sessler D.M. (Dr. Sessler’s sister)

Dr. Sessler is the Michael Cudahy Professor and Chair of the Department of OUTCOMES RESEARCH at the Cleveland Clinic. He served as Handling Editor for Anesthesiology for 9 years and reviews for more than 50 journals. His grants total more than $65 million. Dr. Sessler has published more than 800 full research papers which have been cited more than 40,000 times — making him the world’s most published and cited anesthesiologist, and among the top 0.02% cited authors in all scientific fields. His awards include a Fulbright Fellowship and the ASA Excellence in Research prize.

Associate Director

Alparslan Turan, M.D.


Alparslan Turan, M.D. attended the University of GAZI Medical School and completed residency at Trakya Medical School. Dr. Turan currently is Professor of Anesthesiology at Lerner College of Medicine of Case Western University and Vice Chair of the Department of Outcomes Research at the Cleveland Clinic. He is on the editorial board of several journals and serves as the reviewer for more than 30 others. Dr. Turan’s grants total more than $8 million, and he has published more than 250 research papers. His main interests are perioperative outcomes, postoperative pain, regional anesthesia, and persistent surgical pain. An award for Clinical research has been dedicated to his name by Turkish Anesthesiology Society. He also has received multiple awards for his clinical research from various societies.

Major Site Directors

Donal Buggy, M.D.; Ireland


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Barak Cohen, M.D.; Israel


Dr. Cohen graduated from the Hebrew University of Jerusalem's medical school in 2003, and served as a medical officer in the IDF until 2015. He concomitantly completed his residency in the division of anesthesia, critical care, and pain medicine in the Tel-Aviv Medical Center. During his service and residency, Dr. Cohen was involved in many academic and scientific activities. During his military service he directed the medical preparedness of the Israeli health system to non-conventional radiological disasters, both in the pre-hospital and the hospital environments. He also gained experience in treating casualties in the pre-hospital setup. During his residency, he was awarded several times for excellence in teaching medical students. He recently completed a 3-year clinical research fellowship in the Cleveland Clinic's Outcome Research Department, serving as the department’s chief research fellow. He currently serves as an attending in the Tel-Aviv Medical Center, combining clinical work and the responsibility over clinical research in the largest anesthesia department in Israel. He is also a member of the research committee of the Israeli Society of Anesthesiologists, dedicated to promoting collaborative research in Israel. Dr. Cohen’s main areas of interest include acute postoperative pain, effects of intraoperative hyperoxia, and continuous postoperative monitoring.

PJ Devereaux, M.D., Ph.D. Hamilton Canada


Dr. Devereaux is the Director of the Division of Perioperative Care at McMaster University. He is the Associate Deputy Director of the Population Health Research Institute. He is also the Scientific Leader of the Anesthesiology, Perioperative Medicine, and Surgical Research Group at the Population Health Research Institute. Dr. Devereaux is a full Professor in the Departments of Health Research Methods, Evidence, and Impact (HEI) and Medicine at McMaster University. He has published >330 peer reviewed papers and >80 book chapters, editorials, and commentaries. He has given >900 lectures and research presentations in 40 countries. He is supported by a Tier 1 Canadian Research Chair in Perioperative Medicine. Dr. Devereaux is the President of the Society of Perioperative Research and Care.

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Yuguang (Gary) Huang, M.D. Beijing China


Brian Ilfeld, MD, MS


Dr. Ilfeld attended medical school and completed residency at the University of California, San Francisco; regional anesthesia fellowship & Master of Science degree in Clinical Investigation at the University of Florida; clinical research-focused at the University of California San Diego since 2006; over 165 peer-reviewed articles and editorials; and over $19-million in career Federal funding, the majority from the Department of Defense, with current clinical research involving the treatment of both acute & chronic pain with ambulatory continuous peripheral nerve blocks, cryoneurolysis, and percutaneous peripheral nerve stimulation.

Ngai Liu, M.D., Ph.D. France


Ngai Liu, MD, attended medical school, anesthesia-intensive care residency and fellowship at the University of Paris. He is Associate Professor of Anesthesia and Director of Research (Hôpital Foch, Anesthesia Department, Suresnes, and CHR Orléans, Anesthesia Department, Orléans, France). He has been the lead author and co-author on nearly 80 refereed full research papers and holds a doctorate in pharmacology. His research interests include intravenous anesthesia, pharmacology, depth-of-anesthesia monitoring, and development of closed-loop controllers. He has extensive clinical experience with regard to cardiothoracic anesthesia (lung transplantation, transesophageal echocardiography, cardiopulmonary bypass, artificial hearts) and neurosurgery. He is a cofounder of MedSteer.

Colin Royse, MD


Dr. Royse is a Professor of Anesthesiology at the University of Melbourne, and a cardiothoracic anesthesiologist at the Royal Melbourne Hospital. His research interests include cardiac surgery outcomes, postoperative quality of recovery, echocardiography and clinical ultrasound. He is a founder of the Postoperative Quality of Recovery Scale (PostopQRS). He has published over 175 peer reviewed papers. He has a strong educational interest, specializing in eLearning, and is currently the Director of Custom and Professional Education for the Faculty of Medicine, Dentistry and Health Sciences at the University of Melbourne. He is a senior section editor for Anaesthesia and Analgesia.

Bernd Saugel, MD


Dr. Saugel is a professor of anesthesiology and consultant in the Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine of the University Medical Center Hamburg-Eppendorf (Hamburg, Germany). He is a board-certified specialist in anesthesiology, intensive care medicine, and internal medicine and holds the European Diploma in Intensive Care Medicine. His main field of research is hemodynamic management in perioperative and intensive care medicine. He especially focuses on concepts of "personalized hemodynamic management“ of high-risk patients having surgery and critically ill patients using advanced innovative hemodynamic monitoring methods. Dr. Saugel has published more than 150 original articles and didactic reviews in peer-reviewed journals. He is the Chair of the Scientific Subcommittee 14 (monitoring, ultrasound and equipment) of the European Society of Anesthesiology (ESA). He also serves as Associate Editor (Cardiovascular) of the Journal of Clinical Monitoring and Computing and as Section Editor (Cardiovascular) of the Journal of Critical Care.

Peter Szmuk, MD; Dallas, USA


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Dr. Szmuk is professor of anesthesiology in the Department of Anesthesiology and Pain Management, University of Texas Southwestern and Children’s Medical Center, Dallas, Texas. Dr. Szmuk graduated from the Institute of Medicine Tirgu Mures, Romania in 1981 and completed his anesthesia residency at Kaplan Hospital in Rehovot, Israel in 1990. Dr Szmuk joined the Department of Anesthesiology at University of Houston in 1996 and that of University of Texas Southwestern and Children’s Medical Center at Dallas in 2006. Since 2006 he has been the Director of Pediatric Anesthesia Research. Dr Szmuk is the author of over 150 peer reviewed publications. His major clinical, teaching and research activities are focused on the difficult pediatric airway and new technologies used in anesthesia practice.

Thomas Volk, MD; Germany


Dr. Volk, M.D. attended the University of Essen, Germany and completed his residency at Charité University Medicine, Berlin, Germany. Thomas Volk is a full Professor of Anesthesiology at the University of Saarland, Germany, and Head of the Department of Anesthesiology, Intensive Care and Pain Medicine in Homburg, Germany. He is member of several medical societies, has published more than 200 research papers. His main interests are breath analysis and regional anesthesia. Thomas Volk currently is president elect for the European Society of Regional Anesthesia.