Dr. Calderón’s broad experience includes representation of corporate clients, representation and participation in charitable organizations, representing public sector entities and individuals in a wide range of legal matters.

Government Representation

Dr. Calderón has more than 35 years of experience in litigating cases in Arizona’s state and federal trial courts and before the U.S. Court of Appeals for the Ninth Circuit. He is also experienced in the areas of civil rights litigation, construction litigation, procurement, business defense contract litigation, education law, liability claims and appellate law.

Business Law and Commercial Litigation

Dr. Calderón represents clients in business disputes and commercial litigation matters. He offers expertise in unfair competition and business interference disputes along with offering business succession planning. He has litigated disputes over commercial leases, ownership and shareholder disputes, financial and misrepresentation disputes, contract breaches, business dissolution negotiations and litigation and business torts.

An extensive knowledge of the litigation process enables Dr. Calderón to efficiently assess cases and form an effective and economical litigation plan. His litigation planning has involved all commercial settings, including business dissolutions, partnership disputes, defense against personal injury claims, construction defect disputes and employment law cases. He also excels in handling plaintiff’s personal injury cases, plaintiff’s wrongful death disputes and various professional malpractice proceedings.

Employment and Labor Law

Dr. Calderón regularly provides employment law advice and litigation representation to public and private employers on issues involving age, sex, race or disability discrimination and wrongful discharge. He has handled numerous cases involving sexual harassment and negligent hiring and supervision. He regularly advises employers on employment policies and procedures and due process/discipline issues. He has also represented executive-level employees in limited plaintiffs’ employment claims.

Administrative Law

Dr. Calderón has extensive experience in representing clients before local, state and federal administrative agencies. He has represented employers before the Equal Employment Opportunity Commission (EEOC), the Arizona Civil Rights Division (ACRD), The Industrial Commission of Arizona (ICA), Arizona Divisions of Occupational Safety and Health and other agencies. He has represented public entities in employee disciplinary and termination hearings. In the construction arena, he has represented public and private construction project managers in procurement, before the Arizona Registrars of Contractors, construction and other administrative hearings.

He has guided clients in their dealings with the Arizona Department of Insurance, particularly with regard to the establishment of public entity insurance and benefits pools. We represent many businesses in disputes with the State of Arizona and other public entities particularly involving over regulation and procurement disputes.

Health Care and Professional Licensing

Dr. Calderón has assisted dental, behavioral health, physician and other healthcare providers in professional licensure and disciplinary cases before professional boards. As a former President of the State Board of Dental Examiners and the State Bar of Arizona, Dr. Calderón has significant professional licensing experience. Further, as former Director of Legal Affairs at Blue Cross Blue Shield Arizona, health care law has been at the heart of his practice. He formerly served on the Cancer Treatment Centers of America – Western Hospital Board. He has also represented school districts and governing boards in teacher disciplinary actions and group health insurance matters.

Education Law

Dr. Calderón represents several school districts throughout Arizona on a wide range of issues. He has regularly handled investigations of teacher misconduct, teacher termination hearings, matters before the State Board of Education and the PPAC, and defense against employee claims of discrimination and sexual harassment. He has provided advice and representation on numerous student issues, including student discipline, student records and constitutional issues. He has advised governing boards on statutory and procedural, public records law, conflicts of interest law and sensitive open meeting law matters. He has extensive experience in representing school districts in all aspects of the procurement and construction process, including administrative hearings, arbitration and litigation. He has been involved in the negotiation and drafting of complex intergovernmental agreements.

General Business Law

Dr. Calderón regularly represents clients in contract negotiation, drafting and review, business transactions, corporate governance, compliance counseling, business litigation and numerous other matters ranging from major deals to day-to-day business operations.

Alternative Dispute Resolution

Dr. Calderón has served as a pro tempore Arizona Superior Court Judge to preside over mediations and settlement conferences. He has also been appointed a Special Master and Mediator by Arizona’s state and federal Courts. He works diligently to help parties resolve their disputes before costly litigation overshadows their dispute.

Admitted To Practice

Arizona Supreme Court
U.S. District Court, District of Arizona
U.S. Court of Appeals, Ninth Circuit
U.S. Court of Appeals, District of Columbia Circuit
U.S. Supreme Court


Doctor of Education in Organizational Change and Educational Leadership, University of Southern California, 2020
Juris Doctor, University of Arizona, 1982
– President, Student Bar Association
– Editor, 1st Year Moot Court, 1982
– Phi Delta Phi Legal Fraternity
Bachelor of Science, Northern Arizona University, Political Science, 1979
– President, Associated Students of Northern Arizona University

Reported Cases

Florez v. Sargent, 185 Ariz. 521, 917 P. 2d 250 (1996)
R.L. Augustine Const. Co., Inc. v. Peoria Unified School Dist. No. 11, 188 Ariz. 368, 936 P.2d 554 (1997)
Arizona Independent Redistricting Comm’n v. Fields, 206 Ariz. 130, 75 P.3d 1088 (Ct. App. 2003)
Gallo v. U.S. Dist. Court For Dist. Of Arizona, 349 F.3d 1169 (9th Cir. 2003).

Core Competencies

  • Civil Litigation

  • Business Law and Commercial Litigation

  • Employment & Labor Law

  • Administrative Law

  • Health Care Law and Professional Licensing

  • Education and School Law

  • Construction Law

  • Personal Injury/Consumer Law

  • Ethics Representation

  • Open Meeting Law & Compliance Advice

  • Conflicts of Interest Investigation and Training

  • Alternative Dispute Resolution

  • All Government Representation