Mathematica is one of two policy research centers that lead the SSA's Disability Research Consortium. The DRC fosters new research from a team of disability policy experts from Mathematica and three universities.

David Mann
- Employment for people with disabilities
- Supplemental Security Income and Social Security Disability Insurance
- Vocational rehabilitation
- Medicaid home- and community-based services
- Evaluation research and design
- Disability
- Economic Well Being and Income Support
- Transition to Adulthood
- Medicaid and CHIP
- Health
David Mann’s work is focused on improving programs that provide employment, income support, or health services to youth and working age adults with disabilities. He helped evaluate Social Security Administration (SSA) initiatives that promote employment for Supplemental Security Income (SSI) recipients and Social Security Disability Insurance (SSDI) beneficiaries, including Ticket to Work, the Benefit Offset National Demonstration (BOND), and the Promoting Opportunity Demonstration (POD).
Mann currently leads the evaluation for the Vocational Resource Facilitation Demonstration, which is funded by the SSA to test a new employment support model for people who have recently experienced neurotrauma. He has research, evaluation, and lived experience with the vocational rehabilitation, including youth transition and people receiving subminimum wages. Mann oversees Mathematica’s work for the Rehabilitation Research and Training Center on Disability Statistics and Demographics, which is funded by the National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR) to produce new knowledge that can improve the well-being of people with disabilities. He also has experience studying home and community-based services for Medicaid beneficiaries, including state 1915(c) waiver programs.
Mann publishes in peer-reviewed publications such as the Journal of Human Capital, the Journal of Vocational Rehabilitation, the Journal of Disability Policy Studies, Demography, and Rehabilitation Counseling Bulletin. He holds a Ph.D. in economics from the University of Pennsylvania.