Staff and Colleagues

Principal Investigators and Core Faculty

Research Staff


Administrative Staff

Co-Investigators and Colleagues at the University of Michigan

Other Co-Investigators and Colleagues

Daniel J. Clauw, M.D.
Daniel Clauw is a Professor of Anesthesiology, Medicine (Rheumatology) and Psychiatry at the University of Michigan. He serves as Director of the Chronic Pain and Fatigue Research Center. Until January 2009 he also served as the first Associate Dean for Clinical and Translational Research within the University of Michigan Medical School, and PI of the UM Clinical and Translational Sciences Award (CTSA). He attended the University of Michigan for both undergraduate and medical school studies and then completed his Internal Medicine residency and Rheumatology Fellowship at Georgetown University. He joined the faculty at Georgetown University in 1990, and while there, founded the Georgetown Chronic Pain and Fatigue Research Center, and served as the Division Chief of Rheumatology, Immunology and Allergy, and Vice Chair of the Department of Medicine. Since moving to UM in 2001, Dr. Clauw has continued his commitment to the clinical care and research into overlapping conditions such as Fibromyalgia, Gulf War Illnesses, and Interstitial Cystitis just to name a few, having become an internationally known expert in chronic pain, and especially the central nervous system contributions to chronic pain states, performing past or ongoing work in conditions such as low back pain, osteoarthritis, vulvodynia, endometriosis, irritable bowel syndrome, and temporomandibular joint disorder.

Daniel J. Clauw, M.D. PubMed Publications

David A. Williams, Ph.D.
David A. Williams, Ph.D., is Professor of Anesthesiology, Medicine (Rheumatology), Psychiatry, and Psychology at the University of Michigan where he also serves as the Associate Director of the Chronic Pain and Fatigue Research Center, Co-Director of the Research Development Core within the Michigan Institute for Clinical and Health Research (MICHR), and on the senior faculty of the Neurosciences Program. He received his doctorate from the Ohio State University and has held faculty appointments at both Duke and at Georgetown University Medical Center, where he served as the division chief of Behavioral Medicine. Dr. Williams is both a clinician and researcher with publications in the areas of chronic illness management, outcomes measurement and instrument development, mechanisms of pain perception and modulation, and research methods and design. He currently sits on the Executive Board of the American Pain Society, the Medical Advisory Board of the American Fibromyalgia Association, and on the Executive Committee of the Health Psychology division of the American Psychological Association. In addition he serves on numerous editorial boards and scientific review committees both nationally and internationally.

David A. Williams, Ph.D. PubMed Publications

Richard Harris, Ph.D.
Richard Harris is an Associate Professor in the Departments of Anesthesiology and Internal Medicine and Director of Pain and Fatigue Neuroimaging at the Chronic Pain and Fatigue Research Center at the University of Michigan. His background is in basic science and clinical research in alternative medicine.  He received his B.S. degree in Genetics from Purdue University in 1992 and his Ph. D. in Molecular and Cellular Biology from UC Berkeley in 1997. Following his graduate work, he completed a postdoctoral fellowship at NIH studying the rhythmic properties of neural cultures. He is a graduate of the Maryland Institute of Traditional Chinese Medicine and has received an MS degree in Clinical Research Design and Statistical Analysis at the University of Michigan. Dr. Harris is currently investigating mechanisms of acupuncture and acupressure in the treatment of chronic pain and fatigue conditions. His recent investigations have focused on the role of central opioid receptors and brain neurotransmitters in acupuncture analgesia and chronic pain. He is a member of the American Pain Society and a co-President for the Society for Acupuncture Research. He serves as Associate Editor of and Scientific Advisor for the Journal of Acupuncture and Meridian Studies, and is an ad hoc reviewer for several other scientific publications.

Richard Harris, Ph.D. PubMed Publications

Steven Harte, Ph.D.
Steven E. Harte, Ph.D., is an Assistant Research Scientist in the Departments of Anesthesiology and Internal Medicine-Rheumatology and Director of Sensory Science at the Chronic Pain and Fatigue Research Center at the University of Michigan, and a Research Associate in the Medical Research Service at the Veterans Affairs Ann Arbor Healthcare System. He received his doctorate in Behavioral and Cognitive Neuroscience from Wayne State University in 2005, where his dissertation examined thalamocortical modulation of pain affect. After graduating he completed postdoctoral training in pain measurement and neuroimaging with Drs. Richard Gracely and Thomas Morrow at the University of Michigan. He completed a second CTSA-sponsored fellowship in translational pain research under the mentorship of Dr. Daniel Clauw. Dr. Harte’s research uses animal models, quantitative sensory testing, and neuroimaging techniques to investigate the underlying pathophysiological mechanisms of central pain syndromes. In collaboration with the UM College of Engineering, Dr. Harte is also involved in the development of novel point-of-care medical devices, e-Health delivery platforms, and diagnostic algorithms for pain research and management. In 2010, he was principal inventor on two patents filed by the University of Michigan for pain assessment devices.

Steven Harte, Ph.D. PubMed Publications

Afton Hassett, Psy.D.
Afton Hassett is a licensed clinical psychologist and an Associate Research Scientist in the Department of Anesthesiology at the University of Michigan Medical School. She is a graduate of Colorado State University and received her doctorate from Alliant International University in San Diego, CA in 2000. From 2002-2005, she was a Continuing Education student in Neuroscience at Princeton University - an opportunity afforded her by a K08 award from the National Institute of Mental Health. She holds an appointment as an Adjunct Associate Professor of Medicine at UMDNJ-Robert Wood Johnson Medical School where from 2000-2010 she conducted research aimed at exploring the role of psychological and affective factors in chronic pain conditions like fibromyalgia, rheumatoid arthritis, lupus and Post Lyme Disease Syndrome. Since joining the Chronic Pain & Fatigue Research Center in the spring of 2010, her research has increasingly focused on targeting resilience factors such as positive affect and well-being in the functional and neurobiological outcomes of those with chronic pain.

Afton Hassett, Psy.D. PubMed Publications

Daniel E. Harper, Ph.D.
Daniel Harper is a Research Investigator in the Department of Anesthesiology and the Chronic Pain & Fatigue Research Center at the University of Michigan. He received a B.S. in Psychology with Honors from the University of North Carolina at Chapel Hill (UNC) in 2007. He went on to pursue his graduate work at UNC in the Psychology Department’s Behavioral Neuroscience Program, receiving an M.A. in 2011 and a Ph.D. in 2014. His graduate research focused on psychophysical examinations of pain, tactile, thermal, and auditory processing in healthy individuals and those with chronic pain. In 2014 Daniel received a Tanner Award, UNC’s highest award for undergraduate teaching. He joined the CPFRC in June of that year as a Research Fellow (post-doc) to learn several neuroimaging techniques, which he has done under the mentorship of the CPFRC faculty and the support of an NIH K-12 fellowship. He is currently Principal Investigator of a research project devoted to better delineating the central and peripheral nervous system contributions to temporomandibular disorders, utilizing a variety of techniques including functional magnetic resonance imaging, magnetic resonance spectroscopy, in vivo corneal confocal microscopy, immunological assays, and quantitative sensory testing.

Chad M. Brummett, MD.
Dr. Brummett is an Assistant Professor (tenure-track) in the Department of Anesthesiology at the University of Michigan. He completed his residency in anesthesiology at the University of Michigan and fellowship in pain medicine at Johns Hopkins University. His clinical roles include chronic pain management, interventional pain medicine, acute pain management, regional anesthesia, and operating room anesthesia. Dr. Brummett’s research interests and clinical responsibilities revolve around acute perioperative pain management and chronic pain, including chronic post-surgical pain. Under the mentorship of Dr. Clauw and other co-investigators from the CPFRC, Dr. Brummett has directed a study of post-surgical outcomes, including lower extremity total joint arthroplasties.

Michael E. Geisser, Ph.D.
Michael Geisser, Ph.D., received his doctorate in Clinical Psychology from the Finch University of the Health Sciences/Chicago Medical School in 1988, and completed his internship in the Department of Clinical and Health Psychology at the University of Florida that same year. He currently is an associate professor in the U-M Department of Physical Medicine and Rehabilitation and is director of research for the Spine Program. Geisser's research interests include: studying the influence of psychosocial factors on the experience of acute and chronic pain; psychophysical assessment of pain; treatments for chronic pain and disability; and psychosocial factors associated with the progression and maintenance of pain. His primary interest is studying chronic back pain, although he also is involved in studies on fibromyalgia, spinal stenosis, and neuropathic and central pain.

Grant Kruger, Ph.D.
Grant H. Kruger, Ph.D., is a Research Investigator in the departments of Mechanical Engineering and Anesthesiology at the University of Michigan. He received his doctorate in Electrical Engineering from the Nelson Mandela Metropolitan University, South Africa in 2005. After graduating Dr. Kruger lectured in the Department of Mechatronics before pursuing his postdoctoral research at the University of Michigan in 2007. His research and publications cover areas from manufacturing to biomedical engineering. Dr. Kruger's current research focuses on health informatics, specifically the research and development of systems, devices and signal processing based on artificial intelligence technology.

Katherine A. Scott, BSN, RN
Katherine Scott is a Research Nurse at the University of Michigan, Chronic Pain and Fatigue Research Center (CPFRC). She has a Bachelor of Science Degree in Nursing from the University of Michigan, School of Nursing. Prior to her involvement with the Chronic Pain and Fatigue Research Center, she served as a research nurse at the Michigan Clinical Research Unit (MCRU) and a Pediatric Nurse at C.S. Mott Children’s Hospital. As part of the Chronic Pain and Fatigue Research Center, she is responsible for regulatory compliance for oversight organizations such as the UM IRBMED and NIH, and coordinating study start ups with the various entities involved.

Megan Halvorson, BS, CCRP
Megan Halvorson is a Clinical Research Coordinator at the University of Michigan’s Chronic Pain & Fatigue Research Center. She completed her Bachelor of Science degree at the University of Michigan with a concentration in Brain, Behavior, and Cognitive Science and a minor in Biological Anthropology. She is currently a Certified Clinical Research Professional through the Society of Clinical Research Associates (SoCRA).