One person was killed and four others were wounded in a shooting in Washington’s Logan Circle neighborhood on Thursday morning. (Foto: Instagram)
Matt Lambert, a 55-year-old emergency physician and health technology executive, was identified as the suspect in a shooting that killed one person and wounded four others in Washington’s Logan Circle neighborhood on Thursday morning, Nov. 12. The incident took place about 1.5 kilometers from the White House and prompted a response by police and emergency crews that lasted for hours.
The person killed was James Stuart, 46, the manager of the condominium building where Lambert lived. Authorities said Stuart was shot inside a gym in the building. After the shooting, Lambert returned to his seventh-floor apartment and fired from its balcony at people on the street. Four people were hit—two men and two women. One was in critical condition, while the other three had injuries that were not considered life-threatening.
Lambert had an established career in medicine and health technology. A specialist in emergency medicine, he held leadership roles at organizations and companies involved in managing medical services and developing technology for health care. His professional experience included executive positions at Advantmed and Curation Health, as well as work with NYC Health + Hospitals, Johns Hopkins Medicine and the University of Washington. He also served as a chief medical information officer at consulting and technology companies.
He founded and led MLEM, a consulting firm focused on integrating health care and technology, and took part in events and discussions about innovation and management in medicine. Investigators are examining whether the shooting may have been connected to a legal dispute between Lambert and the association that managed his building. In 2025, he sued the residents’ association, alleging water leaks, dampness and mold in his apartment. Court documents say he claimed the damage had made the unit nearly uninhabitable and that he had spent about $300,000 on repairs.
The condominium association denied responsibility for the problems and also raised legal issues involving the gym on the building’s ground floor. The case was still pending when the shooting occurred. Before the gunfire, an account attributed to Lambert on X posted a document collecting his complaints about the apartment. The material was described as a kind of manifesto and included technical arguments about leaks and possible structural damage. Lambert’s former attorney, Joel Braithewaite, told NBC News that Lambert considered the apartment his most valuable possession and felt wronged because the association had not been held responsible.
Washington police said the first shots were fired shortly before 8 a.m. inside the gym. Afterward, Lambert returned to his apartment, barricaded himself inside and fired at officers through the door. Negotiators reached him by phone and tried to resolve the situation without further confrontation. During the negotiations, Lambert reportedly damaged a gas line and started a fire in the apartment; the building’s sprinkler system partially controlled the flames. After officers heard a gunshot from inside, they entered and found Lambert dead from a self-inflicted gunshot wound. Three firearms were found at the scene. Police said the dispute with the building’s management is one line of investigation, while the circumstances and motive remain under investigation.
