David Quinn Gacioch - McDermott Will & Emery


David Quinn (Dave) Gacioch focuses his practice on litigation and enforcement defense, primarily related to the US healthcare sector.  Dave counsels hospitals, health systems, physician practices, and other providers, along with payors, private equity sponsors, pharmaceutical and medical device manufacturers, and others involved in the US healthcare system, on compliance and risk mitigation issues.  He conducts internal investigations for clients, and represents them in government investigations, enforcement actions, and civil and criminal litigation, including class actions.

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  • Successfully defending the first private healthcare provider against which HHS-OCR and the US Department of Justice tried to take enforcement action over employee conscience and religious freedom issues—securing a complete dismissal of DOJ’s enforcement action and a withdrawal by HHS-OCR of its original notice of violation
  • Securing dismissal of a payor/Medicare Advantage organization client from a qui tam False Claims Act case
  • Convincing US Attorney’s Offices not to intervene or otherwise pursue healthcare provider and life sciences clients in multiple False Claims Act investigations

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  • Chambers USA, ranked “Up and Coming” in Massachusetts – Healthcare, 2022 to 2023
  • Acritas Stars, listed among independently rated lawyers, 2020
  • Super Lawyers, Rising Star, 2013 to 2017
  • Cornell University, received the Baccalaureate Service Award for academic excellence and contributions to the community as a volunteer firefighter and emergency medical technician while in law school


  • Chair, Expert Advisory Panel 4 (COVID-19 Health and Safety), Public Schools of Brookline, Brookline, MA
  • Town Meeting Member and Town government volunteer, Brookline, MA
  • Volunteer youth soccer coach, Brookline, MA
  • Steward Chair, All Saints Parish, Brookline, MA
  • Cayuga Heights (NY) Fire Department, former volunteer firefighter and emergency medical technician


Cornell Law School, JD, cum laude, 2004
Dartmouth College, AB, 2001


Courts / Agencies
US Court of Appeals for the First Circuit
US District Court for the District of Massachusetts