He is licensed in Texas and Oklahoma, and is the Founding Partner of Martin, Disiere, Jefferson, & Wisdom, LLP. He is the author of three legal treatises and more than 90 articles on insurance law and insurance litigation. He has served as the Professor of Insurance Law at the University of Houston Law School for ten years and is a frequent speaker at state and national insurance seminars. He frequently serves as an expert witness, mediator and arbitrator of insurance disputes.