Daniel F. Duffy

Daniel F. Duffy is a Rapid City litigation attorney at Bangs McCullen Law Firm, with a practice focused on civil litigation, healthcare and medical malpractice law, insurance law, and professional liability defense. As a senior partner in litigation, he represents hospitals, physicians, nurses, and other health professionals facing serious claims. He also handles legal malpractice, commercial disputes, product-related litigation, and matters involving attorneys, accountants, businesses, and corporations. His work centers on strong preparation, clear advice, and steady courtroom advocacy for clients in complex disputes.

Daniel earned his J.D. from the University of South Dakota School of Law. He earned his B.A. in History and Political Science from Dakota Wesleyan University, graduating magna cum laude. During law school, he served as president of the moot court board, which strengthened his advocacy and legal writing skills. After graduation, he served as a law clerk for the United States District Court for the District of South Dakota, gaining valuable experience with federal procedure and judicial decision-making.

Daniel has built a long litigation career through trial work, professional defense, and representation of clients in high-stakes claims. He is admitted before the United States Supreme Court, South Dakota Supreme Court, U.S. District Court of South Dakota, and Eighth Circuit Court of Appeals. His memberships include leading defense, trial, and barristers organizations. He was inducted into the American College of Trial Lawyers in 2015 and holds an AV rating from Martindale-Hubbell, reflecting strong professional respect and ethical standards.

Daniel F. Duffy helps clients by defending their rights, reducing legal risk, and guiding them through difficult legal claims with practical judgment. In healthcare cases, he assists providers whose work and reputations may be challenged. In commercial and professional liability matters, he helps clients respond to claims that can affect operations, finances, and trust. His experience with jury trials and complex litigation allows him to explain issues clearly, prepare strong defenses, and pursue fair results through negotiation, motion practice, or trial.

Law Office Affiliations

• Partner, Bangs McCullen Law Firm
• Member, Defense Research Institute
• Member, Association of Defense Trial Attorneys
• Member, American Board of Trial Advocates
• Member, International Society of Barristers
• Member, South Dakota Defense Attorneys Association
• Member, South Dakota Trial Lawyers Association
• Member, American College of Trial Lawyers

Licensed State

• South Dakota

Education

• University of South Dakota School of Law
  Juris Doctor (JD)
• Dakota Wesleyan University
  Bachelor of Arts (BA)

Awards & Badges