McKay Worthington
Partner
Scottsdale Office
14350 N. 87th Street, Suite 265
Scottsdale, Arizona 85260
McKay Worthington is a partner in the Scottsdale hub of Quintairos, Prieto, Wood & Boyer, P.A. Mr. Worthington devotes his practice to medical malpractice defense, representing hospitals, physicians, and other healthcare providers in sensitive and complex cases. He guides clients through every phase of litigation with a focus on risk management, case strategy, and trial preparation. Drawing on more than two decades of courtroom and case management experience, he anticipates challenges and delivers effective solutions in matters of professional liability.
Before joining QPWB, Mr. Worthington built his career in commercial litigation, handling disputes involving corporate governance, contract enforcement, tort claims, and administrative law. Having this foundation sharpened his skills in managing multifaceted cases, developing expert testimony, conducting depositions, and delivering persuasive oral arguments, an experience he now leverages in his medical malpractice practice to achieve successful outcomes for healthcare clients.
Mr. Worthington began practicing law in 1997 with a prominent Phoenix firm, later becoming a partner at an AmLaw Top 100 Arizona firm, where he managed high-stakes business and government cases. Over the years, he has also contributed to the development of litigation training programs and served as a mentor to younger attorneys.
With a Juris Doctor from Columbia University School of Law, Mr. Worthington built a strong academic foundation for his career. During law school, he contributed to the Columbia Business Law Review and published a notable article on government contracts in Winstar v. United States. Prior to law school, he earned his bachelor's degree in Political Science from the University of Utah in 1994.
Mr. Worthington is licensed to practice law in Arizona and is an active member of the American Bar Association, Maricopa County Bar Association, and the Thurgood Marshall Inn of Court.
Representative Cases
- craigslist Inc. v. eBay Inc., Superior Court of California, County of San Francisco
- eBay Domestic Holdings Inc. v. Craig Newmark, et al., Court of Chancery of Delaware
- AMD, Inc. v. Intel Corporation, U.S. District Court for the District of Delaware
- Case filed against Am Law 100 law firm, U.S. District Court for the District of Arizona
- Case filed against Southwest law firm, U.S. District Court for the District of Arizona
- In the Matter of Coopers & Lybrand LLP, State Board of Accountancy of Arizona
- In the Matter of Touche Ross & Company, State Board of Accountancy of Arizona
- Integrated Information Systems Inc. v. Oracle Corporation, Superior Court of Arizona, Maricopa County
- The Pinal Creek Group, et al. v. Newmont Mining Corporation, et al., U.S. District Court for the District of Arizona, U.S. Court of Appeals for the Ninth Circuit
- Standard Chartered PLC v. Price-Waterhouse LLP, Superior Court of Arizona, Maricopa County, Arizona Court of Appeals
- Unitech Industries Inc. v. Coopers & Lybrand, L.L.P., Superior Court of Arizona, Maricopa County
- Borowsky v. Brooks, Superior Court of Arizona, Maricopa County
- Turley v. Beus, Superior Court of Arizona, Maricopa County
