David Sieck

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...

For more than three decades, Larry has represented creditors, trustees, receivers and debtors in significant bankruptcy cases in federal, state and bankruptcy courts. His clients include banks, insurance companies, leasing companies and private parties with investments secured by real property, commercial equipment, accounts receivable and intangible property. An experienced and adept negotiator, he has assisted in restructuring and working out non-performing loans for clients. And, if the lo...

Mr. Cates practices litigation in the areas of medical malpractice defense, personal injury defense, healthcare, and commercial disputes. Mr. Cates represents physicians, hospitals and other healthcare providers in medical malpractice cases, and he has served as trial counsel in numerous medical malpractice jury trials. In addition, he has defended personal injury cases at trial and at arbitration. Mr. Cates also represents physicians and other professionals before their state licensing board...

Jeff is no stranger to complex commercial litigation. In his two decades of law practice, he has cultivated an interpersonal approach to resolving convoluted business disputes. His ongoing relationships with a wide range of businesses small and large has allowed him to develop a direct approach to untangling complicated commercial relationships. The bulk of Jeff’s practice encompasses a versatile range of litigation matters, including commercial litigation, Indian law, construction law,...

Paul practices in the areas of significant personal injury, wrongful death, ethics, and professional malpractice. He previously served as an Adjunct Professor of Medical and Research Ethics at Midwestern University and the Arizona College of Osteopathic Medicine where he instructed health care providers and graduate students in the medical field. He also served as an Adjunct Professor with the Arizona State School of Law. Additionally, he authored the manual and taught attorneys and forensic ...

Casey Blais is an attorney who practices in the areas of commercial litigation, real estate law and landlord/tenant disputes. He regularly represents individuals, lenders, developers, and other private and public entities in bringing and resolving a variety of legal matters. Representative cases include real estate title and litigation matters, foreclosure actions, business and contract disputes, landlord tenant actions, real estate non-disclosure disputes, and judgment collection cases. In 2...

Mark practices commercial litigation and co-chairs the firm’s appellate practice section, handling civil appeals in the state and federal courts. For 25 years, he has represented clients in a wide variety of areas, including business torts and contracts, securities fraud, trade secrets, employment, professional malpractice, officer and director liability, and real estate litigation. Mark has been named a Best Lawyer by the Best Lawyers in America since 2009 , and is also recognized by A...

John DeStefano is a lawyer recognized by Best Lawyers in the practice areas of Insurance Law and Mass Tort Litigation / Class Actions - Plaintiffs. John practices law in Phoenix, Arizona Best Lawyers has recognized John DeStefano since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which John DeStefano is held by other lawyers.

Megan E. Ritenour is a lawyer recognized by Best Lawyers in the practice area of Insurance Law. Megan E. practices law in Phoenix, Arizona Best Lawyers has recognized Megan E. Ritenour since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Megan E. Ritenour is held by other lawyers.

For over three decades, John has advised businesses, business owners, and individuals on all aspects of their operations, from day-to-day operations to strategic planning. His substantive practice includes commercial transactions, real estate, business organizations, corporate law, mergers and acquisitions, federal and administrative compliance, business contract negotiations, and advertising compliance. Automotive Dealerships Known nationally as one of the leading retail automotive industry ...