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Jeffrey J. Ansley

Jeff Ansley is a white collar trial lawyer and the head of Bell Nunnally’s White Collar Criminal and Regulatory Defense practice. Before joining the firm, he served as both an Assistant United States Attorney for the Northern District of Texas and Enforcement Attorney for the United States Securities and Exchange Commission.

Jeff focuses his practice on white collar defense, representing professionals and corporate clients in high stakes investigations and cases before federal prosecutors and in court when the time comes. As a former federal prosecutor, he has an insider’s knowledge of the tactics and resources used by prosecutors and investigators, and so knows how to combat them. Jeff has long been a white collar trial lawyer with a special focus on health care fraud, securities enforcement, and other alleged business crimes.

Jeff represents targets of government health care investigations and prosecutions. His clients include physicians, hospitals, compounding pharmacies and their personnel, and medical organizations and suppliers. In doing so, he has significant experience with matters handled by the Department of Justice, the Medicare Fraud Strike Force, the Department of Defense, and the Health and Human Services - Office of Inspector, among others. Jeff also counsels clients in securities enforcement cases arising from securities offerings and stock trading activities, representing officers, directors, independent committees and boards, and other professionals in high-stakes securities cases. This experience makes him uniquely qualified to handle not only these investigations and charges, but also the collateral regulatory, administrative and civil consequences that often come with them.

He also handles federal and state administrative actions instituted by securities and health care regulators, including acting as counsel for corporations and their officers and directors, physicians and physician groups, broker-dealers, investment advisers, and other professionals and organizations.

Jeff also conducts internal investigations on behalf of corporate clients involving allegations of securities, health care, and tax fraud, employee misconduct, possible violations under the Federal Corrupt Practices Act, and trade secret theft violations, among other suspected misconduct. In addition, he develops compliance and ethics programs for corporations and other business entities. Texas Monthly and D Magazine have consistently recognized him for his white collar and regulatory defense practice.

Government Experience

  • Assistant U.S. Attorney in the Major Fraud and Public Corruption Section of the United States Attorney’s Office for the Northern District of Texas. As a federal prosecutor, Jeff successfully tried and prosecuted some of the most complex fraud cases in the Northern District. He also led the Securities Fraud Task Force for the District, coordinating the actions of a multi-agency criminal and regulatory task force.
  • Special Assistant U.S. Attorney for the Northern District of Oklahoma, where he investigated and successfully tried the architects of one of the most sophisticated securities frauds seen in that District.
  • Enforcement Attorney for the SEC's Fort Worth Regional Office, where he prosecuted a wide variety of suspected federal securities laws violations, including possible financial and accounting fraud, insider trading, offering frauds, registration violations and regulatory compliance matters.


  • J.D., Southern Methodist University Dedman School of Law, 1994
  • B.A., cum laude, Texas A&M University, 1991


  • State Bar of Texas
  • United States District Courts for the Northern, Southern, Eastern and Western Districts of Texas
  • United States District Courts for the Northern District of Oklahoma
  • United States Court of Appeals for the Fifth Circuit
  • Featured in Best Lawyers®’ Texas' Best Lawyers, 2020
  • Ranked in the Chambers USA 2020 legal directory in Band 3 of the “Litigation: White-Collar Crime & Government Investigations” category for Texas.
  • Successfully defended a pharmacist at trial against federal conspiracy to commit health care fraud and illegal kickback charges.
  • Selected by attorney peers for inclusion in The Best Lawyers in America®, 2018, 2019 and 2020.
  • One of six attorneys honored for White Collar Criminal Defense Law in the Dallas 500 list ("The Most Powerful Business Leaders in Dallas - Fort Worth") by D CEO Magazine, 2018.
  • Named one of the "Best Lawyers in Dallas" by D Magazine, 2014, 2015, 2017, 2018, and 2019.
  • Selected by attorney peers for inclusion in Texas Super Lawyers®, 2010-2019.
Activities & Memberships
  • State Bar of Texas
  • Texas Bar Foundation, Fellow
  • Federal Bar Association
  • American Bar Association, White Collar Section
  • Dallas Bar Association, Criminal Law and Securities Law Sections
  • American Health Lawyers Association
  • Author, “How Federal and State Waivers May Impact Care in Texas,” D Magazine, July 2020.
  • Author, "Implementation of the CARES Act in Federal Criminal Proceedings,” April 6, 2020.
  • Author, “Price Gouging Concerns in the COVID-19 Era,” March 30, 2020.
  • Author, “How COVID-19 Will Effect White Collar and Government Investigations,” March 18, 2020.
  • Quoted, “Tricare Fraud Defense Lawyers: Trial was a ‘Lesson’ to Prosecutors,” The Texas Lawbook, December 2019.
  • Quoted, “Trial in massive fraud against troops’ healthcare program ends in Dallas with mixed results,” The Dallas Morning News, December 2019.
  • Co-author, "Government Health Care Fraud Enforcement: Trends in 2018," September 2018
  • Co-author, "The criminal regulatory framework," Health Care Compliance Association (HCCA) Compliance Today, July 2018
  • Co-author, "Compound Pharmacy Crackdown - New Trends In Government Enforcement," December 2016.
  • Co-Author, "The Anatomy of an SEC Investigation," eb5 Investors, Vol. 2, Issue No. 3., August 2015
  • Author, “The Ends Do Not Justify the Means: Pre-Trial Asset Freezes Increasingly Paralyze the Defense,” The Texas Lawbook, March 2014
  • Co-Author, “Facebook, You and the Government: The SEC is Following Your Tweets,” The Texas Lawbook, May 2013
  • Co-author, “Where Did My Privilege Go? Congress and Its Discretion to Ignore the Attorney-Client Privilege,” Criminal Law Bulletin, (West Services, Inc.), Vol. 47, Issue No. 2, December 2011
  • Author, “Risks and Mistakes Come with the Territory: The Difficult Task of the SEC,” The Texas Lawbook, October 2011
  • Author, “Action Items in the Wake of Dodd-Frank,” Texas Lawyer, White-Collar Crime and Forensic Accounting Practice Focus Issue, November 2010
  • Co-author, “Bribery in Foreign Commerce,” California Law Magazine, July 2010
  • Co-author, “Conflicts Between U.S. and U.K. Corporate Privilege Laws,” American Bar Association, Criminal Litigation Newsletter, Vol. 10, No. 1, Fall 2009
  • Co-author, “Commercial Bribery and the New International Norms,” Bloomberg Law Reports, White Collar Crime, October 2009
  • Author, “Investigations Give Rise to Indictments,” Executive Counsel, November, 2008
  • 2020: Webinar, "The Aftermath of an Acquittal - How a Three Year Health Care Fraud Investigation Resulted in 'Not Guilty,'" February.  
  • 2019: Speaker, “Criminal Developments,” 6th Annual Government Enforcement Institute, September.
  • 2018: Webinar, "Preparing for Healthcare Investigations," November.
  • 2017: Speaker, “Healthcare Enforcement Issues: Civil and Criminal Developments,” The University of Texas School of Law’s 4th Annual Government Enforcement Institute, October.
  • 2016: Speaker, "Essential Information for a Rapidly Changing World," Bell Nunnally CLE Seminar, June
  • 2015: "What You Should Know About Federal Antitrust Enforcement," presented to Trinity Industries, June 30, 2015
  • 2014: Speaker, “Inside the Insider Trading Trial of Mark Cuban,” The Texas Lawbook CLE Presentation
  • 2010: Speaker, “What In-House Counsel Needs to Know about White Collar Issues,” State Bar of Texas 9th Annual Advanced In-House Counsel Course
  • 2009: Speaker, “Preventing White Collar Prosecutions,” International Association of Defense Counsel Annual Meeting
  • 2009: Speaker, “White Collar Prosecutions: What to Do When the Government Comes Calling,” Human Resources Roundtable
  • 2009: Speaker, “Corporate Compliance in the Government Age: When Compliance Leads to Law Enforcement,” Texas General Counsel Forum, September
  • 2008: Speaker, “Saving the Attorney-Client Privilege: Cooperating Without Caving In,” South Texas Law School Forum on White Collar Crime
  • 2008: Speaker, “Your Company’s Exposure Abroad: The Foreign Corrupt Trade Practices Act,” Organization for Women in International Trade, June