Derek Pfaff

Stephanie L. Chilton is a top attorney recognized by Best Lawyers in the practice area(s) of Product Liability Litigation - Defendants. Stephanie L., who practices law in Sun City, Arizona, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephanie L. is held by other top lawyers in the same geographic and legal practice area.

Jason Moyes’ practice is focused in the area of natural resource law. Included in his practice is the representation and defense of agricultural irrigation and electrical districts, small utilities, real estate developers, and other special taxing districts. He is experienced in water rights, electricity, solar, gas-fired and hydroelectric power generation, land use planning, and other permitting matters. Jason has successfully represented clients on numerous state and federal regulator...

Jon Schneider was Best Lawyers® 2017 "Lawyer of the Year" (Phoenix) in Insurance Litigation. His practice encompasses a wide variety of civil litigation matters, including divorce and family law. Jon Schneider founded Schneider & Onofry in 1999. His practice has encompassed a wide variety of complex cases, including: commercial truck accidents professional liability catastrophic injury products liability premises liability elder abuse defense insurance disputes Family law also makes u...

Thomas J. Shorall, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law, Litigation - Insurance and Personal Injury Litigation - Defendants. Thomas J., who practices law in Phoenix, Arizona, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thomas J. is held by other top lawyers in the same geographic and legal practice area.

Since the beginning of his career, Geoff has built his reputation as a lawyer’s lawyer. He serves as Osborn Maledon’s General Counsel and represents fellow attorneys in all aspects of the practice of law. For the last 30 years, his practice has split between both litigation and preventative counsel, advising on a regular basis to clients about risk management, professional liability issues, legal malpractice, bar discipline, ethics, and law practice management issues. Geoff has be...

Leonard Aragon is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Plaintiffs and Personal Injury Litigation - Plaintiffs. Leonard, who practices law in Phoenix, Arizona, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Leonard is held by other top lawyers in the same geographic and legal practice area.

JIM O'SULLIVAN represents closely-held businesses, including law firms and other service professionals. Serving as general counsel and primary contact for businesses and their owners, Jim focuses on the ongoing legal needs of these clients, as well as strategic planning for growth and ownership succession opportunities. Jim leverages his considerable planning, negotiation and contract drafting experience to counsel clients through key events such as business formation, joint ventures, mergers...

Appellate specialist Thom Hudson has decades of experience with hundreds of appeals in state and federal courts on a broad range of topics, including state and federal constitutional issues, torts, contracts, insurance bad faith, Indian law, and punitive damages. Among other things, Thom’s appellate work has helped to secure gaming rights for tribal nations, protect voter registration rights for individuals, protect judges’ pensions rights, safeguard Arizona’s implied home w...

Matthew W. Wright is the managing member of MWW Law, LLC dba Wright Litigation Consulting. He holds a preeminent-AV rating, which is the highest rating in the Martindale-Hubbell national registry of preeminent attorneys. Mr. Wright has been named repeatedly to the list of Best Lawyers® Southwest Super Lawyers®. In addition to being a seasoned trial lawyer, Mr. Wright’s practice includes extensive appellate court experience with appearances before The United States Supreme Court,...

Diane M. Johnsen is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Commercial Litigation and Environmental Law. Diane M., who practices law in Phoenix, Arizona, has been recognized since 2005. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Diane M. is held by other top lawyers in the same geographic and legal practice area.