Hall Estill

David Graves has been practicing law for more than 30 years, assisting clients in the areas of medical malpractice, insurance defense and business litigation. During his career he has received favorable results for his clients in more than 20 trials. 




  • Washington & Lee University School of Law (J.D., 1991)
  • University of Oklahoma (B.B.A. in Finance, with distinction, 1988)


  • Oklahoma
  • 2022-Present Hall Estill
  • 1991-2022 The Barkley Law Firm


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