Riggs Abney Neal Turpen Orbison & Lewis Employee Directory

Law PracticeOklahoma, United States51-200 Employees

Experienced, dedicated, and thoughtful legal counsel for over four decades has made us one of the largest law firms in the state of Oklahoma.


Founded in 1972 by four graduates from the University of Tulsa College of Law, Riggs Abney is one of Oklahoma’s largest law firms. Riggs, Abney, Neal & Turpen, merged with the firm Robinson, Lewis, Orbison, Smith and Coyle in 1994 to become Riggs, Abney, Neal, Turpen, Orbison & Lewis. Today, the firm is known simply as Riggs Abney, with offices in Tulsa, Oklahoma City and Denver, providing broad based legal counsel and representation in all aspects of law.

At the very core of our ethos is the call to public service. Through the firm, our attorneys and staff are involved in numerous charitable organizations. M. David Riggs was a member of the Oklahoma State Legislature for 18 years, and has served as Chairman of the Oklahoma Department of Wildlife Conservation Commission, the Oklahoma Nature Conservancy and the Sutton Avian Research Center. Michael C. Turpen was Oklahoma’s Attorney General from 1982 to 1986, and has helped organize and chair many philanthropic activities and events across the state. James C. Orbison is a past Chairman of the Education State Lottery Commission, past Vice-Chairman of the Tulsa County Public Facilities Authority, Director of the Tulsa Historical Society, Director of the Center for Legislative Excellence, Trustee of the OSU Lew Wentz Foundation, past Chairman and member of the Oklahoma Transportation Authority and former member of the Federal Home Bank Board. C.S. Lewis, III and Melvin C. Hall have both served as Chairmen on the University of Oklahoma Board of Regents. Hall also served as the Executive Director of the Oklahoma Human Rights Commission. Members of every office are active in numerous charitable, civic and service organizations. It is this commitment to public service that gives us our singular identity.

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