Sara D. Aguiñiga

Sara Aguiñiga protects public funds and interests, including health and consumer rights, through representation of public entities.


Sara’s practice includes litigating complex cases in state and federal courts involving alleged health care fraud, deceptive marketing practices associated with highly addictive opioid painkillers, and other issues. She currently represents the Cherokee Nation in litigation filed against the U.S. Department of Health and Human Services and other federal agencies related to the False Claims Act. She is also pursuing litigation against an auto-loan company alleged to have engaged in unfair lending practices, and a pro bono immigration case involving an unaccompanied minor. 

Prior to joining Motley Rice, Sara served as a bilingual witness specialist at a Washington, D.C. law firm, where she maintained compliance enforcement for confidential cases involving nursing homes, interviewed and prepared potential witnesses for trial in Spanish and English, and represented pro bono clients in state courts. 

While pursuing her law degree, Sara helped represent asylum-seekers and advocated for labor rights for migrant workers as a student attorney for the Washington, D.C. Immigration Justice Clinic. She clerked for a Maryland law firm, completing research on immigration law, deportation, asylum and human trafficking, and writing briefs submitted to immigration court and U.S. Citizenship and Immigration Services. She also clerked for the Maryland Office of the Public Defender, interviewing and preparing jailed clients for direct and cross-examinations. 

Sara was an avid figure skater and previously competed on the Mexican National Figure Skating Team.

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  • J.D. American University Washington College of Law, 2013
  • B.A. cum laude, University of Maryland, Baltimore County, 2006

Licensed In

  • District Of Columbia

Admitted to Practice Before

  • Superior Court of the District of Columbia
  • U.S. Court of Appeals for the District of Columbia


Active Case

Opioid Litigation

The growing opioid epidemic crosses virtually all demographics, and with more than half a million related deaths recorded in the U.S. since 2015, the crisis has officially been declared a public health emergency.

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