David C. Wittenburg
Senior Researcher

Senior researcher David Wittenburg is an expert in interventions to promote employment for people with disabilities. His expertise includes substantial experience analyzing disability statistics and evaluating return to work initiatives.

Wittenburg, who joined Mathematica in 2005, is currently a principal investigator for a random assignment study of the Accelerated Benefits Demonstration for the Social Security Administration. This demonstration is examining whether short-term investments in medical benefits for certain Social Security Disability Insurance beneficiaries improve their health and increase their likelihood of returning to work. He is also working on several other evaluations for the Social Security Administration, including the Benefit Offset National Demonstration, the Youth Transition Demonstration, and the Consultative Examinations project.

Wittenburg publishes widely and has authored chapters in The Decline in Employment of People with Disabilities: A Policy Puzzle and Paying for Results in Vocational Rehabilitation: Will Provider Incentives Work for Ticket to Work? He served as an expert reviewer for the National Institute on Disability and Rehabilitation Research and publishes in journals such as the Social Services Review, Journal of Vocational Rehabilitation, Journal of Disability Policy Studies, Journal of Labor Economics, and others. He is a member of the National Academy of Social Insurance and was formerly a senior associate at the Urban Institute and the Lewin Group. He has a Ph.D. in economics from Syracuse University.

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