Joseph Martineau is a practicing lawyer in the state of Arizona. Attorney Martineau received his J.D. from the Brigham Young University, J. Reuben Clark Law School in 1976.

Joshua Barton is a trial lawyer with experience handling catastrophic personal injury, wrongful death, medical malpractice and other cases defending the rights of people who have been injured by other’s negligence. As a founding partner at CalderonBarton, he is committed to helping individuals who would otherwise be intimidated and overwhelmed by the legal system. Mr. Barton takes pride in helping people get the results they are seeking, both in monetary justice and systemic improvements to corporate culture. He leads the firm’s efforts to be “Trial Ready & Tech Savvy” using technology to improve clients’ overall experience working with lawyers by investing in leading-edge software that makes responding to client Mr. Barton’s experience as a trial lawyer began in law school when he volunteered with the Ninth Circuit Pro Bono Appellate Project where he argued before the Ninth Circuit Court of Appeals. He also volunteered as a student prosecutor for the City of Tucson, including trial experience prosecuting misdemeanor trials in Tucson. Mr. Barton was a member of the University of Arizona’s trial advocacy team, where he won the competition’s regional championship. In 2015, he began practicing at a large national law firm with an excellent reputation for trial advocacy successfully representing clients in high-stakes plaintiff’s litigation. Joshua gained valuable experience litigating personal injury cases by working on a wide variety of cases, from initial client intake through discovery, deposition, settlement negotiations and preparing for trial. That experience and his commitment to a laser-like focus on serving clients’ needs with direct, responsive and personalized service lead him to found CalderonBarton.

Family law attorney Natalie L. Mathews had been in practice for 17 years when she joined Stewart Law Group as partner in 2021. She’s high energy but reserved and a keen observer. Natalie brings zealous advocacy and compassion to every client’s legal matter, whether the case is straightforward or complex. Always eager to collaborate, she loves brainstorming with colleagues – exchanging ideas and sharing professional experiences – in a concerted effort to help clients by implementing winning legal strategies and litigation tactics. A proponent of settlement whenever it’s possible, Natalie’s creative legal mind is always working on outside-the-box solutions to clients’ problems. Natalie is definitely a team player, and not just at the office. This Phoenix native is a lifelong competitive swimmer and a serious runner, competing in ultra-marathons and trail races. She has tested her mettle in the Ultra-marathon (Antelope Canyon), Half Dome (Yosemite), Rim2Rim (Grand Canyon), Imogene Pass (Ouray and Telluride), and national Ragnar relay races, among others. With four children under the age of 14 (including a set of twins), one rescue dog and two cats, instead of slowing down she simply picked up the pace.

Since 2005, Chris Houk has been a dedicated advocate for the rights of Arizona’s workers, managers, and employers. From representing clients in small-town discrimination cases to arguing before the Ninth Circuit Court of Appeals, Chris has tirelessly worked to ensure that everyone is treated with the fairness, dignity, and respect they deserve. Chris’s extensive experience includes serving in the Civil Rights Division of the Arizona Attorney General’s Office and the Equal Employment Opportunity Commission. These roles have given him a deep understanding of the laws and regulations that govern employment in Arizona. In addition to his legal practice, Chris is an adjunct professor at the Sandra Day O’Connor College of Law. He also serves as an officer of the National Employment Lawyers Association, Co-Chair of the American Bar Association’s Labor & Employment Section, and is a Fellow with the American Bar Foundation. Outside of work, Chris is actively involved in the Arizona and Metro Phoenix communities, where he and his wife are raising their three children.