An unverified phone threat forced Luminis Health to place both of its major Maryland hospitals on Code Black lockdown Monday, temporarily halting ambulance transports to its Annapolis campus and prompting an increased police presence in Lanham that remained in effect hours later. Luminis Health Anne Arundel Medical Center lifted its lockdown after an initial assessment, while the emergency department at Luminis Health Doctors Community Medical Center in Lanham stayed locked down as a precaution.
According to Eye On Annapolis, Luminis Health confirmed it received the unverified phone threat and immediately contacted law enforcement to investigate. While the Code Black was active, EMS crews could not transport patients to the Annapolis hospital, forcing a temporary diversion of acute cases elsewhere in the region. The outlet also noted that, contrary to rumors circulating online, there was no gunman on the Annapolis campus.
Code Black is a standard hospital emergency code typically used to signal a bomb threat or suspicious package, though some health systems also invoke it during severe personal-security threats, according to Medical News Today. The color-coded system is designed to alert staff quickly to a specific danger without triggering panic among patients in the building.
Two Campuses, Two Different Outcomes
The split response between the two hospitals points to differing threat assessments made by law enforcement at each location. Luminis Health Anne Arundel Medical Center, a 349-bed acute care hospital on a 57-acre campus that also houses one of Maryland's highest-volume birth units, resumed normal operations relatively quickly after its lockdown was lifted. Doctors Community Medical Center in Lanham, which has more than 220 staffed beds and serves as the only acute care hospital in northern Prince George's County, kept its emergency department locked down as a precaution well after the Annapolis campus stood down, with police presence increased on-site.
Per the same report, Doctors Community Medical Center remained open throughout for patients who need care, even as the security posture stayed elevated. No additional details were immediately available about the nature of the threat itself or the status of the law enforcement investigation into who made the call.
A Merger That Ties Two Counties' Hospitals Together
Luminis Health was formed in 2019 through the merger of Anne Arundel Health System and Doctors Community Health System, creating a nonprofit network with more than 6,100 employees and nearly 790 licensed beds serving over 1.5 million residents across eight Maryland counties. That integrated structure is part of why a single threatening phone call was able to trigger simultaneous Code Black declarations at hospitals roughly 30 miles apart in Annapolis and Lanham.
Luminis Health said it prioritizes the safety and security of patients, visitors, and team members, and pledged to provide additional information as it becomes available. The health system has previously taken part in statewide safety efforts, including the Maryland Patient Safety Center's “Care Flows Both Ways” campaign, which clinical leadership joined in 2025 to address underreported workplace violence and security threats in emergency departments, per a Facebook post from CBS Baltimore.
Part of a Wider Pattern of Threats in the Region
Monday's lockdown is not the first time an unverified threat has triggered a large-scale security response in the Annapolis area. A February 2024 threat call shut down the Maryland State House, and a September 2025 digital threat locked down the U.S. Naval Academy — an incident Hoodline covered in its report on the Jodel “mass execution” threat that led to charges against a former midshipman. Threatening communications against public facilities in the region have consistently triggered swift, room-by-room clearing protocols from local and state police.
Hospital security threats also fit into a broader statewide pattern of violence and threats against healthcare workers. A survey of 32 Maryland hospitals by the Maryland Hospital Association identified 1,811 reported incidents of violence against healthcare staff over six months, with roughly 40 percent occurring inside emergency departments. In April 2026, the American Nurses Association and allied healthcare groups warned in a national statement that security threats and verbal aggression in emergency care settings worsen workforce burnout and compromise patient care.
Ongoing Changes at the Lanham Campus
The Lanham hospital's emergency department has been undergoing physical changes independent of Monday's lockdown. Doctors Community Medical Center broke ground in April 2026 on a 67,000-square-foot Women's Health Pavilion, a project Hoodline reported would bring back obstetrics care to northern Prince George's County by 2028, and that includes upgrades to the emergency department itself. The Lanham campus has also served as a regional receiving hospital in the past, including for a Maryland State Trooper injured after a Tesla struck a patrol car on the Capital Beltway last year.
Anne Arundel Medical Center similarly functions as the primary emergency receiving facility for Annapolis, a role underscored by its ongoing interface with active police investigations, such as the unsolved July 2026 fatal shooting on Royal Street covered in Hoodline's reporting on a decade-old unsolved Annapolis murder case. As of Monday evening, key questions remained open, including the exact nature of the caller's threat, whether investigators have traced its origin, and whether anyone will face charges for triggering the emergency response.
