Mahoney, Dennis M. MD

4500 Cherry Creek Dr S Suite 950Denver, CO 80246

Updated: 01/18/2018


Dr. Mahoney graduated with honors from Franklin & Marshall College in Lancaster, Pennsylvania. He then attended Temple University in Philadelphia, PA where he graduated 4th in his class of 125. After medical school, Dr. Mahoney moved to Denver, Colorado and practiced for several years as an obstetrician/gynecologist. He then served for three years as a captain in the United States Army Medical Corps. During his time in the Army, Dr. Mahoney had the opportunity to testify as a...


Office Info

Current Employment Position(s)

  • Founder / Partner

Practice Areas

  • Medical Malpractice - Plaintiff
  • Brain Injury
  • Spinal Cord Injury
  • Birth Injury


  • 100%


Bar Admissions

  • Colorado, 1968
  • U.S. District Court District of Colorado, 1968
  • U.S. Court of Appeals 10th Circuit, 1998

Other Affiliations

  • Colorado Trial Lawyer's Association (Member)
  • American Association for Justice (Member)
  • American Bar Association (Member)
  • American Medical Association (Member)
  • Multi-Million dollar Advocates Forum (Life Member)


  • Selected to Super Lawyers (Plaintiff Medical Malpractice), 2007 - 2018
  • Best Lawyers in America
  • Top Lawyer 5280 Magazine, 2016 - 2018
  • Abel Klaw Scholarship Award
  • American Jurisprudence Award
  • Corpus Juris Secundum Award
  • Faculty Horn Book Award
  • Fellow of the American College of Legal Medicine
  • Walter Harrison Hitchler Award

Classes and Seminars

  • Guest Lecturer, University of Denver College of Law, Denver, Colorado
  • Guest Lecturer, University of Colorado College of Law, Boulder, Colorado

Past Positions

  • Wormwood, Wolvington, Renner & Dosh, Denver, Colorado, Associate
  • Johnson & Kidneigh, Denver, Colorado, Associate
  • Johnson & Kidneigh, Denver, Colorado, Partner
  • Dennis M. Mahoney, M.D., J.D., Lakewood, Colorado, Partner
  • The Mahoney Law Firm, Lakewood, Colorado, Partner
  • United States Army Medical Corps., Captain
  • Fort Chaffee Army Hospital, Fort Smith, Arkansas, Assistant Chief OB/GYN Section
  • Fort Devons Army Hospital, Ayer, Massachusetts, Assistant Chief OB/GYN Section


  • The Dickinson School of Law, Carlisle, Pennsylvania
    Honors: summa cum laude
    Honors: Graduated First in Class
    Law Review: Dickinson Law Review
  • Temple University, USA
  • Franklin & Marshall College, Lancaster, PA, USA
    Honors: cum laude
    Honors: With Honors
    Major: Pre-Med

Fraternities and Sororities

  • Sigma Chi


Offers Free Initial Consultation


Published Works

  • Pennsylvania's Captain of the Ship Doctrine: A Mid-Twentieth Century Anachronism, Dickinson Law Review, Vol. 71, p.432
  • Informed Consent to Surgery: Substitution of Patient's Subjective Understanding of Nature and Risks of Procedure for Objective Reasonable Man Test., A Critique of Gray v. Gunnagle, 423 Pa. 144. Cited in Dunham v. Wright 423 F.2d 943
  • Therapeutic Abortion: The Psychiatric Indication, a Double-Edged Sword, Dickinson Law Review, Vol. 72, p. 270
  • When a Signed Consent is not Enough, Medical Economics, Vol. 44, p. 41
  • Informed Consent to Surgery, Pennsylvania Medicine, Vol. 44, p. 41
  • Emergency Care and Transportation: Medicine and Legality, Association of Operating Room Nurses Journal, Vol. 12, No. 5, p. 42
  • The Experts Research Nursing Care and the Law, American Association of Operating Room Nurses Journal., May, 1971

Office Information


4500 Cherry Creek Dr S Suite 950Denver, CO 80246


  • 303-987-0045


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