Amelia Valenzuela

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...

J.D. (with High Honors), University of Florida, 1993 A.B., Government, magna cum laude , Harvard University, 1990 Law clerk to the Hon. Susan H. Black, U.S. Court of Appeals, Eleventh Circuit, 1995-1996 Law clerk to the Hon. Lacey A. Collier, U.S. District Court for the Northern District of Florida, 1993-1995 Attorney (associate and partner), Lewis Roca Rothgerber LLP, 1996 to present

Daniel E. Durchslag is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Real Estate. Daniel E., who practices law in Phoenix, Arizona, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Daniel E. is held by other top lawyers in the same geographic and legal practice area.

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.

Keith has substantial experience litigating complex commercial matters in a variety of contexts, including business torts, injunctive proceedings, legal malpractice defense, and claims against directors and officers. He has served as lead counsel in the defense of class actions. Additionally, Keith represents broker-dealers and investment professionals in the litigation, arbitration, and regulatory arenas. He has been involved in evidentiary injunctive matters on a broad range of issues, incl...

Brennan is a Certified Specialist in Real Estate and practices with the firm’s zoning and real estate attorneys. He has experience in the areas of land use planning, zoning, real estate transactions, landlord/tenant, title insurance and other real estate-related matters. Brennan also is experienced in commercial and business litigation. Brennan is licensed to practice in Arizona state and federal courts. He received his J.D. from St. Mary’s University Law School in San Antonio, Te...

Martin J. Solomon is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Martin J., 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 Martin J. is held by other top lawyers in the same geographic and legal practice area.

Richard S. Plattner is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Richard S., who practices law in Phoenix, Arizona, has been recognized since 2001. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Richard S. is held by other top lawyers in the same geographic and legal practice area.

Karen represents health care systems, hospitals, clinics, and other providers in matters of quality management, medical staff credentialing and peer review, medical staff structures, bylaws and confidentiality, as well as National Practitioner Data Bank, state professional board, and other government reporting. She also regularly assists health care providers with state licensure and Medicare certification, survey compliance, Joint Commission accreditation, EMTALA compliance, patient consent,...

Steven J. Gross is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law, Litigation - Insurance and Transportation Law. Steven J., who practices law in Phoenix, Arizona, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steven J. is held by other top lawyers in the same geographic and legal practice area.