Julie Hartnack
Human Services

Julie W. Hartnack


Julie W. Hartnack is a researcher with diverse experience in safety net programs and policy analysis. She has played a lead role in national, state, and local evaluations and evidence-based technical assistance projects. She serves as task lead on several studies of the Supplemental Nutrition Assistance Program (SNAP), including the cost study for the SNAP Employment and Training Pilots Evaluation, the Assessment of SNAP Employment and Training Data project, and for the study of SNAP data matching practices. Hartnack provides evidence-based technical assistance to state and local research sites conducting national impact evaluations and local rapid-cycle evaluations. She recently led a process evaluation of the Colorado Department of Corrections’ system of reentry services.

Hartnack joined Mathematica in 2011. She holds a master’s degree in public health from the Bloomberg School of Public Health at Johns Hopkins University.

  • Programs for low-income families and their children
  • Implementation and process evaluation
  • Collecting and analyzing cost data
  • Evidence-based technical assistance
  • SNAP
  • Public housing
Focus Area Topics
  • Human Services
  • Employment
  • Training and Re-employment
  • Family Support
  • TANF and Employment Issues
  • Justice
  • Reentry
  • Nutrition
  • Nutrition and Food Assistance Programs

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