Under a contract with CMS’s Innovation Center, Mathematica operates multiple learning systems for Medicare ACOs that promote the rapid distribution of innovative ideas and strategies for improving health care delivery and quality.

Sonya Streeter
- Technical assistance
- Learning system development
- Health care quality improvement
- Data visualization
- Health
- Delivery System Reforms
- Medicare
Sonya Streeter’s research focuses on health care delivery reform and issues related to Medicare and Medicaid Accountable Care Organizations (ACOs). Her expertise includes qualitative research, technical assistance and learning system development, and data visualization. She is also associate director of Mathematica’s Center on Health Care Effectiveness and the health division technical assistance offering lead.
Streeter has worked extensively in peer-to-peer learning collaborative and provision of technical assistance, and currently serves as the Principal Investigator for the Center for Medicare & Medicaid Services (CMS) Innovation Center’s ACO Learning System. Streeter oversees curriculum development for expert and peer-to-peer learning, conducting baseline and annual assessments of ACO capabilities and learning needs, facilitating events, and development of case studies and toolkit, that showcase innovative care improvement practices. She also leads activities for the Next Generation ACO Model on implementation of benefit enhancements, improvement in post-acute care, and management of high-risk/high-cost beneficiaries.
Before joining Mathematica in 2013, Streeter held positions with the Kaiser Family Foundation, Avalere Health, the University of California, Berkeley, and John Snow, Inc. She holds an M.P.P. and an M.P.H. in health policy and management from the University of California, Berkeley, and served as a fellow on the Joint Economic Committee in Washington, DC.