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Meet Our Team


Tamar Mendelson, PhD

Bloomberg Professor of American Health

Research interests: mental health, opportunity youth, school-based prevention programs, mindfulness and yoga, critical consciousness

Beth Marshall, DrPH

Associate Director
Research Core Co-Lead
Assistant Scientist

Research interests: youth risk behaviors, school-based health programs, schools and health, health education, youth development, teen pregnancy prevention

Terri W. Powell, PhD

Associate Director
Training Core Lead
Bloomberg Associate Professor of American Health
Vice Chair of Inclusion, Diversity, Anti-Racism and Equity

Research interests: Sexual and reproductive health, substance use prevention, community engagement,  implementation science, qualitative methodologies

Kristen Mmari, PhD

Research Core Co-Lead
Bloomberg Associate Professor of American Health

Research interests: opportunity youth, early adolescents, gender norms, monitoring and evaluation 

Melissa Davey-Rothwell, PhD

Translation and Dissemination Core Lead
Associate Scientist

Research interests: HIV/AIDS, drug abuse, implementation science, dissemination, urban health

Erin R, Hager, PhD

Associate Professor

Research interests: Interventions to promote healthy eating and physical activity among children; evaluation of policy and program implementation (focus: prevention of obesity and/or food insecurity); school health: strategies to reduce pediatric health inequities ; implementation science 

Dylan Jackson, PhD

Associate Professor
Co-Director Health Criminology Research Consortium

Research interests: child health; adolescent health; crime; violence; criminal legal system; justice-involved families; incarceration; policing; adverse childhood experiences; trauma-informed policy; mental health; social support; prevention science; life course; health equity

Marina C. Jenkins, PhD

Postdoctoral Research Fellow

Research interests: Adolescent health; substance use; maternal and child health epidemiology; health equity; reproductive justice; social media and youth mental health

Renee M Johnson, PhD, MPH

Associate Professor

Research interests: emerging adults, substance use epidemiology, vulnerable populations

Anne D. Smith, PhD

Assistant Scientist

Research interests: Adolescent health; School health; Sexual and reproductive health; Menstrual health; Puberty transitions; Program evaluation; Implementation science; Community-engaged research; Youth-engaged research; Participatory methods 

Maria Trent, MD, MPH

Director, Division of Adolescent/Young Adult Medicine
Adolescent Health T32 Training Director
Bloomberg Professor of American Health/Professor of Pediatrics, and Nursing, Johns Hopkins University
Senior Associate Dean, Diversity and Inclusive Excellence, Johns Hopkins Medicine

Research interests: sexual and reproductive health, STIs, pregnancy prevention / contraception, health disparities, adolescent access to clinical services, school health services, impact of racism and other forms of discrimination on youth development 


Mickelder Kercy, MD, MS

Program Officer

Paige Wilson, MA

Communications Core Lead
Communications Specialist


  • Hoover Adger
  • Kamila Alexander
  • Kiara Alvarez
  • Laura Clary
  • Rebecca Fix
  • Kevon Jackman
  • Odis Johnson
  • Richard Lofton
  • Arik Marcell
  • Pamela Matson
  • Camille Robinson
  • Peter Rowe
  • Renata Sanders
  • Lindsey Webb
  • Alicia Wilson