Robert M. Castle III


  • Robert M. Castle III
  • Phone: +1 214 257 7211

    Import to Address Book

  • Duane Morris LLP
    100 Crescent Court, Suite 1200
    Dallas, TX 75201

Robert M. Castle III represents clients in a variety of industries with his main focus on healthcare industry clients. Mr.Castle’s nationwide healthcare practice includes qui tam defense, civil and criminal government investigations, internal investigations, internal compliance review, billing audits, white-collar criminal defense, hearings before administrative law judges, contract review, medical board hearings and investigations, licensing matters, certificate of need disputes, ERISA claims, and counseling on compliance issues. Mr. Castle represents multiple types of providers, including hospitals, hospices, home health agencies, long-term acute care facilities, inpatient and outpatient rehabilitation care providers, community care providers, pediatric home care providers, ambulatory surgery centers, physician groups and individual physicians. He also represents compounding pharmacies, reference laboratories, pharmaceutical companies, durable medical equipment manufacturers and distributors, and medical device and implant manufacturers and distributors. Prior to law school, Mr. Castle worked in medical sales for manufacturers and distributors in the clinical laboratory and medical/surgical fields.

In addition to healthcare law, Mr. Castle has also handled disputes for financial services institutions, private wealth managers and financial advisers, oil and gas companies, current and retired professional athletes, and a variety of other commercial businesses. He has experience filing and defending cases involving common law claims, including breach of contract, business torts and equitable claims, as well as state and federal statutory claims involving, among others, the False Claims Act, the Anti-Kickback Statute, the Stark Law, securities laws, ERISA, Title VII, Americans with Disabilities Act (ADA), Age Discrimination in Employment Act (ADEA), and other state and federal healthcare and banking statutes. Mr. Castle has experience in state and federal courts and representing clients in venues throughout the United States, including Texas, New York, Delaware, Florida, Pennsylvania, Arizona, Colorado, California, Ohio, Kansas, Missouri, Georgia, Oklahoma, Mississippi, Louisiana, Nevada, Alabama and Wyoming. A frequent speaker, he has delivered numerous presentations to attorneys and physicians on securities and healthcare issues. 

Mr. Castle is a 2002 cum laude graduate of the Southern Methodist University Dedman School of Law, where he was elected to the Order of the Coif, and a graduate of Texas Tech University.

Areas of Practice

  • Healthcare Litigation

  • Commercial Litigation


  • U.S. District Court for the Eastern District of Texas
  • U.S. District Court for the Northern District of Texas
  • Texas


  • Southern Methodist University, Dedman School of Law, J.D., cum laude, 2002
    - SMU Law Review
    - Order of the Coif
  • Texas Tech University, B.A., 1999


  • Duane Morris LLP
    - Partner, 2021-present
  • Barnes & Thornburg LLP
    - Partner, 2018-2021
  • Lackey Hershman LLP
    - Partner, 2009-2018
  • Bracewell Giuliani
    - Associate, 2007-2009
  • Weil Gotshal & Manges
    - Associate, 2003-2007

Honors and Awards

  • Listed in The Best Lawyers in America, 2022 and 2023