Isaacson Law Firm, P.C., is incorporated in Arizona as a professional corporation. The firm represents a broad range of clients before the Arizona Legislature and Arizona state government. Don Isaacson founded the lobbying practice in 1985 and is the shareholder and the director of Isaacson Law Firm, P.C.. Don previously served as Rules Counsel, Majority Counsel and Director of Research for the Arizona House of Representatives.

Marie Isaacson joined the firm in 2018 and has thirty years of experience in Arizona state government. Most recently, Marie served as the Director of Human Resources and the Director of Benefits for the State of Arizona.

The firm has been recognized as the state's "Best Lobbying Firm" for each of the three past years that the award has been granted by the Arizona Capitol Times (2016-2018), the leading source of political news in Arizona. The annual "Best of the Capitol" awards are based on voting by individuals involved in policy-making in Arizona, including elected officials, legislative and executive staff, lobbyist and others actively engaged in the legislative process in Arizona. The Capitol Times noted, "At the state Capitol, Isaacson's work stands out, and colleagues regard him as the consummate professional, the lobbyist who understands that a good lobbyist fights the good fight for his clients but doesn't seek to tear down his opponents."

The firm has appeared consistently in the U.S. News & World Report's ranking of Best Law Firms (Tier 1). It has been rated "AV Preeminent" by Martindale-Hubbell for 30 years and is listed in its Bar Register of Preeminent Firms.

Firm Specialties:
For over 35 years, the firm of Isaacson Law Firm, P.C. has provided high level legal and government relations services to a diverse clientele, including Fortune 500 companies, small independent businesses, trade and professional associations, and everything in between.

Specific areas of expertise include banking, insurance, telecommunications, pharmaceuticals, optometry, higher education, law enforcement, wholesale liquor and various other trades. In addition to a significant amount of representation before the Arizona State Legislature and local governments, the firm represents clients before various Arizona state agencies in regulatory matters, including the Department of Health Services, State Liquor Department, Arizona Health Care Cost Containment System, Department of Insurance, Board of Regents, and others. The firm also serves as general counsel for commercial enterprises having interests within and outside Arizona. Isaacson Law Firm, P.C.'s research-based, non-partisan approach to public policy has helped build lasting working relationships with clients, government officials and even opponents of their lobbying efforts.