Sienna Osta


Orlando Office

255 South Orange Avenue, Suite 900

Orlando, Florida 32801

Telephone: (407) 872-6011

Facsimile: (407) 872-6012


Sienna Osta is an associate in the Orlando Office of Quintairos, Prieto, Wood & Boyer, P.A. Ms. Osta primarily focuses her practice on personal injury, premises liability, and medical malpractice claims. Her practice also includes auto negligence, slip-and-falls, catastrophic injury, wrongful death, and first-party property.

Prior to joining QPWB, Ms. Osta was the owner of the law practice, Osta Law, P.A. in West Palm Beach. As the head litigating attorney, she independently handled caseloads, and conducted numerous depositions of witnesses, from Plaintiffs and fact witnesses to expert witnesses such as forensic investigators, engineers, and physicians. Previously, she was a senior associate specializing in PIP litigation with a Florida law office where she also handled criminal cases, family law matters, and personal injury actions.

Ms. Osta received her Juris Doctor from Thomas M. Cooley School of Law in 2015 and a Bachelor of Science from the University of South Florida in 2012, dual majoring in Biomedical Sciences and Molecular & Microbiology. While in law school, she served as a Certified Legal Intern at the State Attorney's Office conducting witness interviews, jury trials, and bench trials, as well as thorough research and compiling evidence for investigations of white-collar crimes.

Ms. Osta is licensed to practice law in Florida. She is also admitted at the federal court level in both the Middle and Southern Districts of Florida.

Ms. Osta's involvement in community-based organizations includes:

  • Candidate for Florida State House of Representatives - District 87, fighting for JUSTUS--Just Unapologetic, Shameless Transparency for a better US; and drafting Proposed Bill Fighting for ALL Missing Persons--AMP Alerts
  • Guardian ad Litem
  • Public Speaker
  • Board Member, Palm Beach County Democratic Club
  • Board Member, Progressive Caucus of Palm Beach County

Awards & Recognitions

  • Lawyers of Distinction Award for Civil Litigation
  • Hillsborough County Bar Trial & Litigation Scholarship Recipient
  • Published in Lawyer: The Importance of Jury Trials
  • Book Award Appellate Advocacy and Research & Writing
  • Elected Class Senator, Thomas M. Cooley Law School 2014
  • Numerous candidate endorsements at state and national level

Areas of Practice

  • Medical Malpractice Defense
  • Civil Litigation
  • Personal Injury Defense
  • Automotive Liability
  • General Litigation
  • Premises Liability


Thomas M. Cooley School of Law, J.D. (2015)

University of South Florida, B.S. (2012)

Bar Admissions


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