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DHDPS Leadership

Peter K. Lindenauer, MD, MSc, MHM

LindenauerPeter_smPeter Lindenauer is the Chair of the Department of Healthcare Delivery and Population Sciences, Professor of Medicine, and Assistant Dean of Population Health at the UMass Chan Medical School-Baystate, Professor of Quantitative Health Sciences at the University of Massachusetts Medical School, and Adjunct Professor at the Tufts University School of Medicine. A board-certified internist and practicing hospitalist, and founding Board member of the Society of Hospital Medicine, Dr. Lindenauer's research focuses on measuring the quality and outcomes of care for patients with common medical conditions, evaluating the effectiveness of acute treatments and care strategies, and the design, implementation and evaluation of interventions to improve care delivery.

His research is supported by grants from the Agency for Healthcare Research and Quality and the National Heart Lung and Blood Institute of the NIH. He is the author of over 280 peer reviewed papers, which have appeared in the New England Journal of Medicine, JAMA, Annals of Internal Medicine, Health Affairs, Medical Care, and leading general internal medicine and subspecialty journals.

In 2008, he received the excellence in research award from the Society of Hospital Medicine, and in 2012 he was named a Master in Hospital Medicine. In 2013, he received Baystate’s Weinberg Family Award for academic excellence. In 2018, he received UMass Chan-Baystate's Award for Excellence in Research Mentoring. He is a member of the Editorial Boards of the Journal of Hospital Medicine, the Joint Commission Journal of Quality and Patient Safety, and Perioperative Medicine, and has served on multiple NIH study sections focused on health services research, dissemination and implementation, and career development awards. Dr Lindenauer is a graduate of the University of Chicago, the University of Pennsylvania School of Medicine, the London School of Economics and Political Science, and completed a residency and chief residency in internal medicine at the University of California San Francisco.

Kimberley Geissler, PhD

Kimberley GeisslerKimberley Geissler is the Chief of the Division of Health Equity and Health Services Research in the Department of Healthcare Delivery and Population Sciences. Dr. Geissler is a health economist and health services researcher with research interests in policies and systems that impact access to and quality of healthcare for vulnerable populations, including people covered by Medicaid. Her work particularly focuses on measuring and assessing coordination of care in a highly fragmented system, and on evaluating insurance and organizational factors influencing access to care.

Her research is currently supported by grants from the National Heart, Blood, and Lung Institute; the National Institute of Mental Health; the National Institute of Dental and Craniofacial Research; Substance Abuse and Mental Health Services Administration; and the National Institute for Healthcare Management Foundation. She has published peer-reviewed papers in journals including JAMA Psychiatry, JAMA Network Open, Medical Care, and Health Services Research.

Dr. Geissler is a graduate of Williams College and the University of North Carolina Gillings School of Global Public Health. She completed her postdoctoral training in health economics and computer science at the Boston University Questrom School of Business.


Elizabeth Peacock-Chambers, MD, MSc

Dr. Elizabeth Peacock-ChambersLili Peacock-Chambers is the Chief of the Division of Health and Behavior in the Department of Healthcare Delivery and Population Sciences, a board-certified pediatrician, and an Assistant Professor of Pediatrics and Healthcare Delivery and Population Sciences at UMass Chan-Baystate. Dr. Peacock-Chambers’ research focuses the study of behavioral interventions using qualitative, implementation, and community-engaged research methodologies. As a pediatrician, her clinical and research interests pertain to the promotion of optimal early childhood health and development among families facing adversity and marginalization, particularly among families affected by substance use disorders.

Her research has been supported by grants from the Tufts CTSI (KL-2 and Pilot Awards) and is currently supported by NIDA (K23 award), PCORI, and SAMHSA. She has published peer reviewed papers in journals including Pediatrics, Journal of Developmental & Behavioral Pediatrics, Infant Mental Health Journal, Journal of Substance Abuse, and Implementation Research & Practice.

In 2020, she was inducted into the UMass Chan Medical School Gold Humanism Honor Society. She received Baystate’s Young Investigator Award in 2019. In 2017 and 2018, she received the Baystate Pediatric Residency Teaching Award. In 2015, she received the Academic Pediatric Association Young Investigator Award. She completed her pediatric training at Boston Children’s Hospital and Boston Medical Center. She then completed a fellowship in General Academic Pediatrics at Boston Medical Center where she earned a degree in epidemiology. She also completed the UMass Boston Infant-Parent Mental Health postgraduate program and is a current fellow in the NIH-funded “Implementation Research Institute” that seeks to advance the field of implementation science in mental health.

Penelope S. Pekow, PhD

Dr. Penelope PekowPenny Pekow is the Supervisor of Biostatistics and Research Support for the Department of Healthcare Delivery and Population Sciences at UMass Chan-Baystate, as well as a Adjunct Associate Professor in the Department of Biostatistics and Epidemiology in the School of Public Health and Health Sciences at University of Massachusetts Amherst.

Her recent work has focused on application of analytic methods for comparative effectiveness studies and studies of variation in delivery of care utilizing large observational databases with multi-level hierarchical data structures.