Photo of Daniel Tsai Daniel Tsai (MassHealth)

Assistant Secretary, MassHealth

Medicaid Director, Commonwealth of Massachusetts

Daniel Tsai is the Assistant Secretary for MassHealth and Medicaid Director for the Commonwealth of Massachusetts. Mr. Tsai was appointed in January 2015 by Governor Charlie Baker to oversee the state’s Medicaid program, which covers over one in four residents in the Commonwealth, including some of its most vulnerable citizens. He is responsible for developing new policies, payments, models, and operational processes that ensure a sustainable MassHealth program and improve the way health care is delivered to each of its 1.8 million members. During Mr. Tsai’s time as Assistant Secretary, MassHealth has undergone the most significant restructuring since the 1990’s with the implementation of its Accountable Care Organization Program. The agency has also contained spending growth from historical double digits to single digits while maintaining robust coverage for members.

Before joining HHS, Mr. Tsai was a Partner and leader in McKinsey & Company’s Healthcare Systems and Services practice. He has significant experience on the design and implementation of innovative, state-wide health care payment systems for Medicaid, Medicare, and Commercial populations, and has worked closely with multiple state Medicaid programs, private payers, and health services companies. He received a Bachelor of Arts in applied mathematics and economics from Harvard University.

Mr. Tsai lives with his wife and son in Cambridge. He volunteers at a local community health center in Boston’s South End.


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