J. Matthew "Matt" Derstine

Daryl Manhart is an AV® Preeminent 5.0 out of 5 peer review rated attorney in Martindale-Hubbell. He is a senior shareholder handling commercial and real estate transactions, commercial litigation, and general business representation. Daryl is also the firm’s principal appellate attorney handling civil appeals, including special actions, in state and federal appellate courts in diverse practice areas, including cases before the U.S. Supreme Court. The firm’s trial lawyers regu...

Steve Sparks joined Sanders & Parks in 1995 and is a Shareholder and Director. For many years, he served as the firm's Vice President and on the firm's Executive Committee. Mr. Sparks has earned Martindale-Hubbell's highest AV® Preeminent rating and has been honored by AVVO (a peer-reviewed professional organization) with its highest rating – Superb Rated Attorney. He is licensed to practice law in both Arizona and California and maintains an active practice in both jurisdiction...

As a licensed veterinarian, Mark has the medical knowledge to help his clients get the results they deserve. Given his strong medical science background, Mark's practice focuses on tort law, including medical negligence, product liability, and other significant personal injury cases. He has nearly 35 years of experience litigating medical malpractice cases with victories including the landmark Edwards verdict and a transfusion-associated AIDS case that remains one of the largest personal inju...

Charles Callahan is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Insurance Law, Litigation - Insurance and Personal Injury Litigation - Defendants. Charles, who practices law in Phoenix, Arizona, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Charles is held by other top lawyers in the same geographic and legal practice area.

Matt is a graduate from the University of Notre Dame, where he was a member of the Men’s Varsity Basketball Team. He received his Juris Doctorate from Arizona State University in 2003. Matt is a shareholder focusing his practice in plaintiff’s catastrophic personal injury and wrongful death and criminal law. In his nearly ten years as a lawyer, Matt has distinguished himself in the courtroom and the community. He is passionate about his clients and dedicated to seeking justice on ...

Chris is a member of Keller Rohrback’s Complex Litigation and Bankruptcy Groups. He has represented debtors, creditors, Court-appointed committees, and asset purchasers in Chapter 11 reorganization proceedings and workouts. In recent years he has also focused on representing plaintiffs in ERISA class actions. Chris has wide-ranging experience in complex commercial matters, from corporate restructuring to breach of fiduciary duty, commercial real estate, contracts, patent infringement, a...

James Fassold is a shareholder at Tiffany & Bosco who concentrates his practice on probate and trust litigation, estate administration, elder law, and appeals. He is an adjunct professor at the Phoenix School of Law, and has served as a mediator and expert witness. Over the years, Jim has handled numerous probate and trust disputes, as well as guardianships and conservatorships. He is frequently engaged to handle complex probate litigation matters, including will and trust contests, breac...

Paul Eckstein's practice is focused on civil litigation (including appellate matters) involving commercial, legal malpractice, constitutional, Indian law and political law issues. He also frequently serves as a mediator and arbitrator.

Michael K. Foy is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law, Litigation - Environmental, Natural Resources Law and Water Law. Michael K., who practices law in Phoenix, Arizona, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael K. is held by other top lawyers in the same geographic and legal practice area.

Michael E. Pietzsch is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law and Tax Law. Michael E., who practices law in Phoenix, Arizona, has been recognized since 1987. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael E. is held by other top lawyers in the same geographic and legal practice area.