Thomas Barker

Partner, Co-Chair, Healthcare Practice - Washington, D.C.

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Thomas Barker has been a partner at Foley Hoag since March of 2009. Tom focuses his practice on complex federal and state health care legal and regulatory matters with a special expertise in Medicare and Medicaid law including coverage, reimbursement, and regulatory oversight. In May of 2019, he was appointed as a commissioner of the Medicaid and CHIP Payment and Access Commission (MACPAC), an advisory body that provides policy advice to Congress and the states on the Medicaid and CHIP programs. He is one of the authors of the firm's Medicaid & the Law blog,, which highlights and explains current legal and policy issues in the Medicaid program.

Prior to joining the firm, he was acting General Counsel of the U.S. Department of Health and Human Services (HHS) and General Counsel of the Centers for Medicare & Medicaid Services (CMS). 

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  • Suffolk University Law School, J.D., magna cum laude, 1998
  • Jacksonville University, B.A. in English and Political Science, with honors, 1981

Professional Experience

  • George Washington University Medical Center, School of Public Health and Health Services, Assistant Professor of Health Law
  • Suffolk University School of Law, Adjunct Professor teaching courses in Medicare and Medicaid law, tax law issues in health care, and introductory health law

Foley Hoag Alerts & Updates


  • High Honor, 2020 Capital Pro Bono Honor Roll  (April 2021)
  • Listed in THE BEST LAWYERS IN AMERICA for Health Care Law (2016-2022)
  • Ranked by CHAMBERS USA: AMERICA'S LEADING LAWYERS FOR BUSINESS as one of Massachusetts' leading healthcare lawyers (2011-2021)
  • U.S. Department of Health and Human Services, Secretary’s Award for contributions to Administration’s health care initiatives (2002-2007)
  • Jacksonville University, Jacksonville, Florida, Distinguished Alumni (2006)


  • Commissioner, Medicaid and CHIP Payment and Access Commission (MACPAC) 
  • American Health Lawyers Association
  • Boston Bar Association
    • Health Law Section Steering Committee, Member; developed quarterly newsletter of Section
  • DC Bar
  • Federalist Society
  • Member of the Board of Trustees of the Massachusetts Association for Mental Health
  • Cathedral of St. Matthew of the Apostle, Washington, D.C., October 2003 - present
  • John Carroll Society
  • American Immigration Lawyers Association
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Bar Admissions

  • District of Columbia
  • Massachusetts

Court Admissions

  • Supreme Judicial Court of Massachusetts
  • U.S. District Court for the District of Massachusetts
  • U.S. Tax Court
  • U.S. Court of Appeals for the District of Columbia Circuit
  • U.S. District Court for the District of Columbia
  • District of Columbia Court of Appeals
  • U.S. Supreme Court
  • U.S. Court of Appeals for the First Circuit
  • U.S. Court of Appeals for the Fifth Circuit
  • U.S. Immigration Court