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The Office of Public Health Practice & Training

Faculty & Staff


Josh Sharfstein, MD - Vice Dean for Public Health Practice and Community Engagement

Josh Sharfstein is the Vice Dean for Public Health Practice and Community Engagement. Sharfstein also holds a faculty appointment in the Department of Health Policy and Management. Previously, Sharfstein was appointed by Governor Martin O’Malley as Secretary of the Maryland Department of Health (formerly Maryland Department of Health and Mental Hygiene) in January 2011. In March 2009, President Obama appointed Sharfstein to serve as the Principal Deputy Commissioner of the U.S. Food and Drug Administration, the agency’s second highest-ranking position. He served as the Acting Commissioner from March 2009 through May 2009 and as Principal Deputy Commissioner through January 2011. From December 2005 through March 2009, Sharfstein served as the Commissioner of Health for the City of Baltimore, Maryland. As secretary of DHMH, Sharfstein has led efforts to modernize Maryland’s all-payer system for hospital payment. He also serves as a member of the editorial board at the Journal of the American Medical Association (JAMA). Prior to joining the state, he was Principal Deputy Commissioner of the U.S. Food and Drug Administration and, before that, Baltimore City’s Commissioner of Health. He began working on health and social policy matters as an advisor to longtime California Congressman Henry A. Waxman, where he was responsible for projects related to public health.



Beth Resnick, DrPH, MPH – Assistant Dean for Public Health Practice and Training

Beth A. Resnick is a Senior Scientist at the Johns Hopkins Bloomberg School of Public Health, Department of Health Policy and Management. She is the Assistant Dean for Public Health Practice and Training, and is the Director of the Office of Public Health Practice and Training and the MSPH Program in Health Policy. Her research and practice interests include assessing and improving the public health infrastructure, enhancing knowledge of potential environment and health connections, and developing and evaluating effective public health policies. Prior to her appointment at Johns Hopkins, Beth Resnick was Director of Environmental Health at the National Association of County and City Health Officials (NACCHO). She provided education, information, research, and technical assistance to the nation’s 3,000 local health departments and facilitated partnerships among local, state, and federal agencies in order to promote and strengthen local environmental public health practice.



Lainie Rutkow, JD, PhD, MPH - Professor

Lainie Rutkow is a professor with appointments in the School’s Departments of Health Policy & Management and Health, Behavior & Society, and a joint appointment in the School of Medicine’s Department of Emergency Medicine. She co-directs the Johns Hopkins Center for Law and the Public’s Health, and is the faculty director of the Sommer Scholars Program. In addition, Rutkow is a Governing Board Member of SOURCE, and faculty advisor for the Anna Baetjer Society for Public Health Practice. She is a member of the Eastern Region of the Network for Public Health Law. Lainie uses legal research methods, and qualitative and quantitative research methods, to conduct policy analysis and evaluation. Her research focuses on public health law and policy, with an emphasis on emergency preparedness and chronic disease prevention.



Daniel J. Barnett, MD, MPH - Associate Professor

Daniel Barnett is an associate professor with appointments in the Department of Environmental Health Sciences and Health Policy and Management. His public health practice experience includes working for the Office of Public Health Preparedness and Response at the Baltimore City Health Department. He currently serves as PI of the HRSA-funded Mid-Atlantic Regional Public Health Training Center - Johns Hopkins Local Performance Site. Barnett’s research focuses on best practice models to enhance all-hazards public health emergency preparedness and response. 



Darcy Phelan-Emrick, DrPH, MHS – Assistant Scientist

Darcy Phelan-Emrick currently serves as Chief Epidemiologist at the Baltimore City Health Department.  She joined the faculty of the Department of Epidemiology in 2009, and holds the position of Assistant Scientist with joint appointments in the Department of Health, Behavior and Society and the Zanvyl Krieger School of Arts and Sciences.  She teaches the introductory epidemiology course for the Johns Hopkins Undergraduate Program in Public Health Studies. Phelan-Emrick’s interests in public health practice focus on the role of epidemiology for informing public health policy development and assurance.  Her research interests center on cancer prevention services, particularly in the context of cervical cancer.  Darcy has held prior positions with the New York City Department of Health and Mental Hygiene, the New York Academy of Medicine, and the Rockefeller University.



Ruth Maiorana, Executive Director, Maryland Association of County Health Officers (MACHO) 

Ruth has served as the Executive Director for the Maryland Association of County Health Officers since 2007. MACHO is the non-profit professional association for the twenty-three Health Officers that lead the state’s twenty-four local public health departments. Johns Hopkins Bloomberg School of Public Health has housed and provided administrative support for the association since the early 1990s when MACHO was first incorporated. Ruth is the first Executive Director for the association.

Ruth has extensive experience at the local health department level as well as with the state health department and other health-related non-profits. In her capacity as MACHO Executive Director, she is responsible for the work of the association, including legislation and policy, fiscal assessment, analysis, program development, social media outreach, evaluation, planning, and other critical projects. She serves as the liaison for MACHO to other state agencies, JHBSPH, stakeholders, and other community groups.



Mindi B. Levin, MS, CHES – Founder and Director, SOURCE

Mindi Levin is the Founder and Director of SOURCE, the community engagement and service-learning center for the Johns Hopkins University Schools of Public Health, Nursing, and Medicine. She holds faculty appointments in the JHSPH Department of Health, Behavior and Society and Health Policy and Management, as well as the School of Nursing Department of Community Public Health. She utilizes service-learning pedagogy in the courses she teaches, in order to provide real world public health practice opportunities for students, while simultaneously responding to community-identified needs. She trains faculty, students, and community leaders in service-learning as well. She co-created and serves as the faculty co-sponsor for the Certificate in Community-Based Public Health, and is a member of the MPH Practicum team. A Baltimore native, her efforts are all focused on serving Baltimore City non-profits.



Paulani Mui, MPH – Assistant Director, Office of Public Health Practice and Training

Paulani Mui is the Assistant Director of the Office of Public Health Practice and Training, and is a faculty Research Associate in the JHSPH Department of Health Policy and Management. She promotes and advances public health practice throughout the School and the community. Paulani coordinates the MPH practicum, and works with students, faculty and partner organizations to establish practicum opportunities that enrich learning and advance public health practice. She completed her MPH at the Bloomberg School of Public Health in 2015, and has prior experience in healthcare program development and management.



April Tong, MA - Senior Special Events Coordinator, Office of Public Health Practice and Training

April Tong is the Senior Special Events Coordinator for the Office of Public Health Practice and Training, at the Bloomberg School of Public Health. She promotes public health practice through the coordination and execution of events hosted by the Practice Office as well as support for student organization events and activities. April manages all social media and event planning and promotions for the Office, and also supports administration of the PHASE and Policy Institute Internship Programs and the MPH practicum. She completed her MA in 2014 from the Columbian College of Art and Science at George Washington University.