Representative Matters

Daniel Purdom has extensive trial and investigative experience concerning white-collar federal crimes, such as health care fraud, complex financial fraud, tax fraud, insurance fraud, SEC fraud, international antitrust, official and police corruption, RICO, organized crime, bank embezzlement, the False Claims Act, and bank fraud. He has tried dozens of criminal and commercial cases in numerous states. Mr. Purdom has briefed and argued more than 25 cases to federal and state appellate courts.

In addition to his white-collar criminal practice, Mr. Purdom has extensive trial experience involving health care fraud and abuse, Illinois Attorney Registration and Disciplinary Committee (ARDC) defense, False Claims Act/qui tam actions, commercial litigation, employment and class action lawsuits.

Mr. Purdom has represented numerous medical providers who have been involved in federal, state and regulatory investigations of alleged health care fraud and related problems. He also handles internal investigations of employee wrongdoing involving embezzlement or internal fraud, and has helped various clients implement and monitor corporate compliance programs. Mr. Purdom has also been involved in numerous False Claims Act/qui tam actions nationally representing health care providers, defense contractors, and others.

In 1986, as an Assistant U.S. Attorney in the Northern District of Illinois, Mr. Purdom prosecuted what was then the largest health care fraud in the United States. He secured the dismantling of a $20 million Medicaid fraud scheme, and the conviction of more than 40 individuals, including doctors, pharmacists and others associated with the scheme. Mr. Purdom coordinated the efforts of the U.S. Postal Inspectors, the Illinois Department of Public Aid, the Illinois Department of Registration and Education, the Illinois State Police and the Internal Revenue Service, and gained valuable working knowledge of the health care billing system. During his tenure with the U.S. Attorney’s Office he tried more than 35 jury trials and briefed and argued more than 15 appeals before the Seventh Circuit Court of Appeals.

Mr. Purdom has been appointed a Special Inspector General by the State of Illinois Executive Ethics Commission to conduct several high profile investigations. He has also been appointed as a Special State's Attorney on a number of occasions to conduct internal investigations and to provide professional ethics opinions.

Professional Background

Mr. Purdom joined Hinshaw & Culbertson LLP in July 1986. He previously served as Partner-in-Charge of Hinshaw's Lisle office and has headed the firm's National White Collar Criminal Practice Group. Mr. Purdom was formerly a member of Hinshaw's Executive Committee.

Previously, from 1980 to 1986, he served as an Assistant United States Attorney for the Northern District of Illinois (Chicago).

Mr. Purdom graduated first in his law school class from Southern Illinois University School of Law in 1978. In addition, Mr. Purdom was the recipient of the Monroe Award for Excellence in Legal Writing and Research, and the West Award for Highest Academic Honors (1st, 2nd and 3rd years). He also received numerous awards for highest grades in individual classes.

Mr. Purdom was a law clerk for Chief U.S. District Court Judge James L. Foreman of the Southern District of Illinois, 1978 to 1980.

Professional Affiliations

  • American Bar Association
    • Section of Business Law
      • White-Collar Crime Committee
  • DuPage County Bar Association

Honors & Awards

  • Recognized by his peers as a "Leading Lawyer" in the areas of: White Collar Criminal Defense and Commercial Litigation
  • Holds the AV® Peer Review Rating from Martindale-Hubbell, its highest rating for ethics and legal ability
  • Selected by his peers for inclusion in The Best Lawyers in America© for Criminal Defense: White-Collar, 2018 – 2022
  • Recognized on the Super Lawyers list by Illinois Super Lawyers magazine, 2005 – 2021
  • Recipient of the Chief Postal Inspector's Special Award, which is presented each year to one prosecutor in the nation from the United States Department of Justice
  • Recipient of the Department of Justice's Director's Award from the United States Department of Justice
  • Recipient of the Special Commendation Award from the United States Department of Justice

Representative Matters

Mr. Purdom has continued his significant record of trial success across a wide spectrum of commercial litigation and white collar criminal cases. Among his representative cases are:

  • US v. Pratt (N.D. of Illinois): Obtained dismissal on the eve of trial in multi-million dollar criminal mortgage fraud prosecution.
  • US v Newlin (N.D. of Indiana): Obtained dismissal of multi-million dollar criminal tax fraud on the eve of trial.
  • Steiner Sports Marketing, Inc. v. David Ortiz: Successfully resolved this contract dispute in the Supreme Court of the State of New York.
  • Jaime Torres Sports Management, Inc. v. Noel Arguelles, Player, Jose Iglesias, Player, and SFX Baseball Group, Agent: Successfully defended SFX Baseball Group and two Cuban teenage defectors in Major League Baseball Players Association multiple week trial.
  • The Name LLC, a Delaware Limited Liability Company, (Jay- Z) v. David Ortiz: Successfully resolved this case in the Southern District of New York.
  • US v. Kien: A two-week jury trial ended when Mr. Purdom was able to secure the client an acquittal of mortgage fraud. The client, an attorney/co-owner of a real estate development company, was the only person acquitted of mortgage fraud as all 14 co-defendants either pled guilty or were found guilty.
  • McGuire v. GTE: Mr. Purdom's client was found not guilty in this Title VI and age discrimination lawsuit.
  • Psharis v. Central DuPage Hospital: Mr. Purdom's client was found not guilty in this medical malpractice death case.
  • ServiceMaster v. Navistar: Mr. Purdom secured a $1 million verdict for his client in this commercial contract dispute.
  • McKinney v. Coca Cola: Mr. Purdom's client was found not guilty in this product liability trial.
  • U.S. ex rel. Perales v. St. Margaret's. False Claims Act where relator was seeking $89 million. Case dismissed based on 10 summary judgment motions.  
  • U.S. ex rel. Fields v. Sherman Health Systems: False Claims Act case with relator seeking $17 million. Case dismissed on our motion.
  • JBS v. Village of Glen Ellyn: Mr. Purdom secured a permanent injunction for his client in this commercial land dispute.
  • Harmon v. Streams: Mr. Purdom's client was found not guilty arising out of alleged structural building defect.
  • In re: Conarty: Mr. Purdom secured a finding in favor of his client in this Illinois Attorney Registration and Disciplinary Commission (ARDC) trial.
  • US v. Helfand: A two-week federal court jury trial for mortgage fraud. Mr. Purdom's client was acquitted on 14 of the 15 charges.


Mr. Purdom has spoken extensively on issues related to health care fraud, white-collar crime, the False Claims Act, attorney discipline, corporate compliance and internal corporate investigations. He was an instructor in the area of health care fraud at the FBI Academy in Quantico, Virginia, and has also been an instructor and lecturer for the National Institute of Trial Advocacy at Northwestern and Loyola Universities, the Department of Justice Advocacy Institute and the DuPage Bar Association Trial Advocacy Program.

His presentations include:

  • "What to do when the FBI knocks on your door and other horror stories," DCBA Healthcare Law & Practice MCLE Meeting, DCBA  Bar Center, Wheaton, Illinois, October, 25, 2017
  • "What Employers Need to Know About Whistleblower Claims," Hinshaw's Annual Labor & Employment Seminar, Hoffman Estates, Illinois, October 2016
  • "Employment Law: 2015 Comprehensive Guide," "Putting in Place Document Retention Programs" for the National Business Institute, Naperville, Illinois, June 10, 2015
  • "Oversight Responsibility and Liability for Corporate Officers and Directors," Hinshaw's Annual Health Care Conference, Lisle, Illinois, November 2012
  • "Healthcare Fraud: Health Reform's Expansion of Provider Risk and Best Practices to Minimize Exposure in Government Actions," Hinshaw's Annual Healthcare Conference, Lisle, Illinois, November 2011
  • "Beyond the Fraud Triangle: Tales of Audacity, Denial, Ego and Obstruction," Illinois CPA Society Fraud Conference, Chicago, Illinois, November 2011
  • "Anti-Fraud Statutes Within Health Care Reform," Little Company of Mary Hospital and Health Care Centers Executive Team, Evergreen Park, Illinois, March 2011
  • "Anti-Fraud Statutes Within Health Care Reform," Hinshaw's 2010 Health Care Conference, Lisle, Illinois, November 2010
  • "Self-Disclosure," Hinshaw's 2009 Health Care Conference, Lisle, Illinois, November 2009
  • "Self-Reporting," Hinshaw's 2008 Health Care Conference, Lisle, Illinois, November 2008
  • "The False Claims Act," DuPage County Bar Association, Health Care Law Committee meeting, Wheaton, Illinois, February 2008
  • "Conflicts in Representing Buyers/Sellers," DuPage County Bar Association Real Estate Seminar, Wheaton, Illinois, April 2007
  • "Compliance and Self-Disclosure," Hinshaw's 2006 Health Care Conference, "Current Issues Affecting Health System and Hospital Boards and Management," Chicago, Illinois, September 2006
  • "The False Claims Act and Other Whistleblower Statutes Which May Put You Out of Business," Illinois Health Care Association, 56th Annual Convention, Springfield, Illinois, September 2006
  • "Responding to Subpoenas and Search Warrants in the Post-Enron Days," Hinshaw's "2006 Insurance Services Symposium: Creative Management of Claims and Coverage Disputes in a High-Risk Environment," Chicago, Illinois, February 2006
  • Faculty Presenter, American Bar Association's Health Care Fraud & Abuse seminar in San Francisco in May 2002 and in Las Vegas in 2003
  • Faculty Presenter, "Health Care Fraud," Health Care Fraud Conference, Princeton University, Princeton, New Jersey, 1987


Mr. Purdom was the subject of a profile entitled "Q&A With Hinshaw’s Daniel Purdom," that appeared on December 20, 2011 on the Law360 website.

Mr. Purdom has written numerous articles, treatises, and other works on issues in his areas of practice focus. Examples of his published works include:

Community/Civic Activities

  • Xilin Association, Former member of the Board of Directors
  • Glen Ellyn Park District, Glen Ellyn baseball, and multiple sports programs, Past Coach
  • Glenbard West High School Booster Organization, Past Board Member and Past President
  • Glenbard West Youth Center Organization, Past Board Member

J.D., with highest honors, Southern Illinois University College of Law, 1978

B.S., Illinois State University, 1974