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Ellen J. MacKenzie, Ph.D.

Photo of Dr. Ellen J. MacKenzie, Ph.D.

Chair, Department of Health Policy and Management, Bloomberg School of Public Health

Professor of Orthopaedic Surgery

Research Interests: Injury control; Outcomes; Disability; Rehabilitation; Health services; Consumer informatics

Background

Dr. Ellen J. MacKenzie holds a joint appointment in emergency medicine and physical medicine and rehabilitation at the Johns Hopkins School of Medicine. She is the Fred and Julie Soper Professor, the Bloomberg Distinguished Professor and chair of the Department of Health Policy and Management at the Johns Hopkins Bloomberg School of Public Health. She also holds a joint appointment in biostatistics at the Bloomberg School of Public Health.

An expert in health policy and management and biostatistics, Dr. MacKenzie serves on the faculty of the Johns Hopkins Center for Global Health, Center for Health Services and Outcomes Research and Center for Injury Research & Policy.

Dr. MacKenzie's research focuses on the impact of health services and policies on the short‐ and long‐term consequences of traumatic injury. She has contributed to the development and evaluation of tools for measuring both the severity and outcome of injury, which have been used to evaluate the organization, financing and performance of trauma care and rehabilitation.

Her work has advanced the knowledge of the economic and social impact of injuries and our understanding of how personal and environmental factors influence recovery and return to work.

Most recently, Dr. MacKenzie has joined colleagues from around the country to establish the Major Extremity Trauma Research Consortium (METRC). The overall goal of METRC is to produce the evidence needed to establish treatment guidelines for the optimal care of the wounded warrior—and ultimately to improve outcomes of both service members and civilians who sustain high-energy trauma to the extremities.

An honorary fellow of the American Association for the Surgery of Trauma, Dr. MacKenzie was recognized in 2012 by the Centers for Disease Control and Prevention as one of 20 visionary leaders who have transformed the field of violence and injury prevention in the past two decades.

Her other professional honors include the A.J. Mirkin Service Award from the Association for the Advancement of Automotive Medicine; the Ann Doner Vaughan Kappa Delta Award from the American Academy of Orthopaedic Surgeons; the Distinguished Career Award from the American Public Health Association (Injury Control and Emergency Health Services Section); and the American Trauma Society's Distinguished Achievement Award.

Among her many national-level activities, Dr. MacKenzie has chaired the National Advisory Committee for Injury Prevention and Control and served as president of the American Trauma Society.

Dr. MacKenzie earned her Ph.D. and M.S. in biostatistics at the Bloomberg School of Public Health.

She joined the Johns Hopkins faculty in 1980.

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Titles

  • Chair, Department of Health Policy and Management, Bloomberg School of Public Health
  • Fred and Julie Soper Professor, Department of Health Policy and Management, Bloomberg School of Public Health
  • Bloomberg Distinguished Professor
  • Professor of Orthopaedic Surgery
  • Joint Appointment in Emergency Medicine
  • Professor of Physical Medicine and Rehabilitation

Research & Publications

Research Summary

Dr. MacKenzie's research focuses on the impact of health services and policies on the short-and long-term consequences of traumatic injury. She has contributed to the development and evaluation of tools for measuring both the severity and outcome of injury, which have been used to evaluate the organization, financing and performance of trauma systems and rehabilitation services.

Of particular interest to Dr. MacKenzie is the delineation of factors (both medical and non-medical) that explain variations in functional outcome. Her research has advanced the knowledge of the economic and social impact of injuries and our understanding of how personal and environmental factors influence recovery and return to work.

Her ongoing research activities include a national evaluation of the cost and effectiveness of trauma care; evaluation of amputation versus limb salvage in the military; development and evaluation of self-management programs following trauma and limb loss; and efforts to facilitate the development and exchange of information among trauma and EMS providers.

Dr. MacKenzie and colleagues have partnered with the American Trauma Society to facilitate online social networks among trauma survivors and translate traditional self-management programs to a web 2.0 environment.

Selected Publications

View all on Pubmed

Wegener ST, Pollak AN, Frey KP, Hymes RA, Archer KR, Jones CB, Seymour RB, OʼToole RV, Castillo RC, Huang Y, Scharfstein DO, MacKenzie EJ; METRC. "The trauma collaborative care study (TCCS)." J Orthop Trauma. 2017 Apr;31 Suppl 1:S78-S87. doi: 10.1097/BOT.0000000000000792

Bosse MJ, Morshed S, Reider L, Ertl W, Toledano J, Firoozabadi R, Seymour RB, Carroll E, Scharfstein DO, Steverson B, MacKenzie EJ; METRC. "Transtibial amputation outcomes study (TAOS): Comparing transtibial amputation with and without a tibiofibular synostosis (Ertl) procedure." J Orthop Trauma. 2017 Apr;31 Suppl 1:S63-S69. doi: 10.1097/BOT.0000000000000791

Hsu JR, Owens JG, DeSanto J, Fergason JR, Kuhn KM, Potter BK, Stinner DJ, Sheu RG, Waggoner SL, Wilken JM, Huang Y, Scharfstein DO, MacKenzie EJ; METRC. "Patient response to an integrated orthotic and rehabilitation initiative for traumatic injuries: The PRIORITI-MTF study." J Orthop Trauma. 2017 Apr;31 Suppl 1:S56-S62. doi: 10.1097/BOT.0000000000000795

Bosse MJ, Teague D, Reider L, Gary JL, Morshed S, Seymour RB, Toledano J, Cannada LK, Steverson B, Scharfstein DO, Luly J, MacKenzie EJ; METRC. "Outcomes after severe distal tibia, ankle, and/or foot trauma: comparison of limb salvage versus transtibial amputation (OUTLET)." J Orthop Trauma. 2017 Apr;31 Suppl 1:S48-S55. doi: 10.1097/BOT.0000000000000799

Schmidt AH, Bosse MJ, Frey KP, OʼToole RV, Stinner DJ, Scharfstein DO, Zipunnikov V, MacKenzie EJ; METRC. "Predicting acute compartment syndrome (PACS): The role of continuous monitoring." J Orthop Trauma. 2017 Apr;31 Suppl 1:S40-S47. doi: 10.1097/BOT.0000000000000796

Activities & Honors

Professional Activities

  • Senior Associate Dean, Johns Hopkins University School of Medicine, 1996 - 2000
  • Director, Johns Hopkins Center for Injury Research and Policy, 1995 - 2005
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