HomeArizonaTucsonRonald Mercaldo

About Ronald Mercaldo

Ron Mercaldo established the Mercaldo Law Firm in 1978 to represent plaintiffs in serious injury and wrongful death cases. The firm has specialized for the last 20 years in the area of medical malpractice. Mr. Mercaldo left a larger firm in 1978, where he was a partner doing both insurance defense and plaintiffs' representation. Mr. Mercaldo obtained his undergraduate and juris doctor degrees from the University of Arizona, completing his studies in 1970.

He has been actively involved in the litigation of personal injury and medical malpractice cases since that time, including insurance defense litigation and plaintiffs' personal injury/medical malpractice litigation. Mr. Mercaldo has not accepted insurance company clients for 30 years. Since his admission to the Bar, Mr. Mercaldo has served on various prestigious committees for the State Bar of Arizona, including the judicial selection committee, jury instruction committee, and professionalism and peer review committee, where he served as chairman for 4 years. Mr. Mercaldo is certified by the State Bar of Arizona in Personal Injury and Wrongful Death Litigation and has sat for over 20 years as a member of the commission, passing on the qualifications of other attorneys to become certified specialists.

He has been president of the Southern Arizona Trial Lawyers Association, the president of the American Board of Trial Advocates, Ariz., and president of the Morris K. Udall American Inn of Court. He is an AV-rated lawyer in Martindale-Hubbell and is listed in the bar registry of Preeminent Lawyers. Mr. Mercaldo has been made a Fellow of the American College of Trial Lawyers, an honor limited to 1% of the lawyers in any given state or province.

Proven verdicts and settlements

$5.29 millionVerdict

A Pima County jury awarded Sharon King $5.29 million after she lost her arm following shoulder replacement surgery at Oro Valley Hospital, where the operating surgeon mistakenly tied off her axillary artery and the neurovascular bundle supplying the limb.

Pima County Superior Court, Arizona · 2023Medical MalpracticeRead the full story →
View all 2 proven verdicts →

Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.

Practice areas

Education

University of Arizona
J.D., 1970
University of Arizona
Undergraduate, 1970

Bar admissions & credentials

State Bar of Arizona

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