Mark has over 37 years of extensive trial and litigation experience in state and federal courts. Mark defends physicians, nurses, hospitals, nursing home/long-term care facilities, physical therapists, dentists, and all other categories of health care providers against medical malpractice wrongful death and personal injury claims. Mark also represents health care providers in professional disciplinary proceedings.
In addition to medical malpractice defense litigation, Mark represents a major regional transportation system in defense of liability claims and subrogation matters, as well as numerous other clients in civil litigation matters involving subrogation, defense of personal injury and wrongful death cases, products liability, and employment discrimination claims.
Mark is admitted to practice in all federal and state courts of Virginia, the United States Court of Appeals for the Fourth Circuit, and the United States Supreme Court. Mark was formerly a member of the law ﬁrm’s governing body, the Executive Board, for many years, and serves as the Practice Group Manager of the ﬁrm’s Workers Compensation and Professional Liability practice. He is also a member of the City of Richmond Bar Association, the Virginia Association of Defense Lawyers, the Virginia Trial Lawyers Association, the Virginia Bar Association, the Pennsylvania Bar Association, North Carolina Bar Association, West Virginia Bar Association, The Defense Research Institute, and the American Trial Lawyers Association.
Mark served as Chair of the Virginia State Bar Mandatory Continuing Legal Education Board and as a member of the Virginia Supreme Court Medical Malpractice Review Panel. In addition, he was named by Virginia Lawyers Weekly as a “Go To Lawyer” for Medical Malpractice. Mark is regularly selected as one of Virginia Business’ “Virginia Legal Elite” in the ﬁeld of Health Law.
Mark is also active in numerous civic, business and professional organizations, including committees of the Virginia Health Care Association, Pennsylvania Bar Association, North Carolina Bar Association, and Virginia Society of the Sons of the American Revolution.
Mark received a B.A. from the University of Delaware and a J.D. from the University of Richmond, where he was an associate editor of The Law Review. He served as law clerk to the Honorable David G. Lowe, United States Magistrate Judge of the U.S. District Court for the Eastern District of Virginia, and as an ofﬁcer for eight years in the U.S. Army Reserves Judge Advocate General’s Corps, Headquarters, and XVIII Airborne Corps in Fort Bragg, North Carolina.
- Defense of a cardiologist and his professional practice group against a suit for $2,000,000 alleging puncture of a blood vessel during performance of a cardiac catheterization and subsequent failure to control bleeding/hematoma, resulting in surgical repair of a pseudoaneurysm and permanent disabilities. The suit was dismissed with prejudice on the eve of trial.
- Defense of three nurses, urologist, and a physician’s practice corporation against allegations and claims for damages of $20,350,000 that a patient died as a result of improper administration (overdose/toxicity) of medications, failure to monitor, and improper use of restraints to subdue the hallucinating and violent patient. Defendants were dismissed with prejudice from the case.
- Defense of physical therapist and physical therapy practice corporation against allegations of a young patient that defendants improperly removed her leg/hip brace after hip replacement surgery, failed to perform an adequate assessment, and failed to timely transport her to a hospital emergency room, resulting in a dozen or more subsequent dislocations and several major hip surgery revisions and replacements.
- Suit requested $2,000,000 in damages and was resolved at mediation for nuisance value after two of plaintiff’s medical experts capitulated at discovery depositions.
- Defense of long-term care facility against wrongful death suit for $2,000,000 alleging death of resident as a result of infections/sepsis caused by alleged failure to properly care for skin/decubitus ulcers. The suit was dismissed, first by a circuit court, then in an arbitration forum.
- Defense verdict on behalf of a long-term nursing care provider against claims of sexual assault and failure to prevent falls resulting in a broken hip.
- Defense verdict for health care provider against claims of whistleblower retaliation.
23 WRVB Attorneys Named “Top Lawyers” for Norfolk, Coastal Virginia Magazine
January 10, 2024
71 WRVB Attorneys Named to 2023 “Legal Elite” and Five Named as Rising Stars
December 1, 2023
70 WRVB Attorneys Named to 2022 “Legal Elite”
November 29, 2022
Mark S. Brennan Sr. honored as a Go To Lawyer for Medical Malpractice in Virginia
December 1, 2021
Vandeventer Black Attorneys Selected as 2020 Legal Elite
November 30, 2020
Twenty-two Vandeventer Black Attorneys Selected as 2019 Legal Elite
November 25, 2019
Vandeventer Black Attorneys Recognized as 2018 Legal Elite
December 11, 2018
Twenty-two Vandeventer Black Attorneys 2016 Legal Elite Finalists
January 9, 2017