About the Team

Allen W. Brown, M.D., leads a group of faculty and staff with expertise in traumatic brain injury and brain rehabilitation, biomedical statistics and collaborative research in the Traumatic Brain Injury Model System at Mayo Clinic.

Allen W. Brown, M.D. Project Director, Principal Investigator

  • 28 years of brain rehabilitation experience
  • Consultant, Department of Physical Medicine and Rehabilitation
  • Research director, Division of Brain Rehabilitation
  • Professor of physical medicine and rehabilitation, Mayo Clinic College of Medicine and Science
  • Subspecialty certification, Brain Injury Medicine, American Academy of Physical Medicine and Rehabilitation
  • Immediate past division chair, Division of Brain Rehabilitation and its research programs
  • Diplomate, American Board of Physical Medicine and Rehabilitation
  • Fellow, American Academy of Physical Medicine and Rehabilitation
  • Past chair, Minnesota Department of Health, State Trauma Advisory Council
  • Department of Defense, Congressionally Directed Medical Research Programs, Peer Reviewed Alzheimer's Research Program
  • Convergence Science Research Award researcher
  • History of collaborative research with other NIDILRR and non-NIDILRR centers
  • Extensive research experience in population-based epidemiology and outcome prediction related to acquired brain disorders, and community-based randomized pragmatic clinical trials testing complex behavioral interventions using telemedicine and web-based interaction
  • Member, Traumatic Brain Injury Model Systems Planning and Research committees
  • Numerous regional, national and international presentations
  • More than 65 peer-reviewed publications and book chapters

Thomas F. Bergquist, Ph.D., L.P. Co-Investigator

  • 25 years of brain rehabilitation experience
  • Consultant, Department of Physical Medicine and Rehabilitation; Department of Psychiatry and Psychology
  • Associate professor of psychology, Mayo Clinic College of Medicine and Science
  • Diplomate, American Board of Clinical Neuropsychology
  • History of collaborative research with other NIDILRR- and non-NIDILRR-funded centers
  • Member of the International Neuropsychological Society, American Congress of Rehabilitation Medicine, American Academy of Clinical Neuropsychology and Acquired Brain Disorders Subcommittee at Mayo Clinic
  • Chair-elect of the Brain Injury — Interdisciplinary Special Interest Group (BI-ISIG) of the American Congress of Rehabilitation Medicine
  • Member, board of directors for the Minnesota Brain Injury Alliance
  • Numerous regional, national and international presentations
  • Extensive research experience in conducting telerehabilitation
  • More than 50 published journal articles and book chapters

Dmitry Esterov, D.O. Medical Director

  • Senior Associate Consultant, Department of Physical Medicine and Rehabilitation, Mayo Clinic
  • Board Certified, Physical Medicine and Rehabilitation, American Academy of Physical Medicine and Rehabilitation
  • Completed Brain Injury Rehabilitation Medicine Fellowship (2018-2019), Mayo Clinic School of Graduate Medical Education
  • Research Mentorship, Mayo Clinic Division of Brain Rehabilitation (2019-2021)
  • Member, Mayo Acquired Brain Disorders Subcommittee
  • Member, Traumatic Brain Injury Model System Aging Committee
  • Reviewer, Archives of Physical Medicine and Rehabilitation and Archives of Rehabilitation Research and Clinical Translation
  • Member, Physical Medicine and Rehabilitation Research Committee
  • Numerous regional and national presentations

Anne M. Moessner, APRN, M.S., R.N. Research Coordinator

  • 34 years of brain rehabilitation experience, 26 years of TBI research experience
  • Master of Science in nursing, board-certified advanced practice registered nurse, certified clinical nurse specialist, certified rehabilitation registered nurse, certified case manager
  • Research coordinator and co-investigator for all primary and collaborative studies since 1998
  • History of collaborative research with other NIDILRR and non-NIDILRR centers
  • Principal investigator on select collaborative research studies, principal investigator for multisite study on safety after TBI
  • Secretary, Mayo Clinic TBI Regional Advisory Council
  • Editor, Mayo Clinic Traumatic Brain Injury Model System newsletter
  • Member, Traumatic Brain Injury Model System Data Committee
  • Numerous regional, national and international presentations
  • More than 20 peer-reviewed publications
  • Multiple work achievement awards

Jay Mandrekar, Ph.D. Statistical Consultant

  • 17 years of TBI research experience
  • Consultant, Division of Biomedical Statistics and Informatics
  • Consultant (joint appointment), Department of Neurology
  • Statistical consultant, Mayo Clinic Traumatic Brain Injury Model System, 2002 to present
  • Co-investigator and statistician on National Institutes of Health, National Institute of Neurological Disorders and Stroke (NINDS), National Multiple Sclerosis Society and other grants
  • Biostatistics editor of Cephalalgia
  • More than 170 peer-reviewed publications

Jeanine E. Ransom Data Manager

  • 10 years TBI research experience
  • Statistical programmer analyst, Division of Biomedical Statistics and Informatics
  • More than 35 years of experience in medical database management and statistical applications, including Statistical Analysis System applications
  • Data manager, Traumatic Brain Injury Model System, 2019
  • More than 50 peer-reviewed publications

Lisa S. Morrey, M.S. Study Coordinator

  • 2 years of research experience
  • Member, Mayo Clinic TBI Regional Advisory Council
  • Recruiter for all subjects for national Traumatic Brain Injury Model System studies
  • Form I and Form II data collection for Traumatic Brain Injury Model System subjects

Nicole L. Dernbach, C.C.R.P. Study Coordinator

  • Six years of TBI research experience
  • Certified Clinical Research Professional
  • Bachelor of Science in psychology
  • Study coordinator for all site specific and module studies
  • Editor, Mayo Clinic Traumatic Brain Injury Model System website