Emergency Services

As an acute care facility, the MedStar St. Mary's Hospital Emergency Department is open 24 hours a day, seven days a week to handle emergency medical situations. Our goal is to care for all individuals who enter our unit with the utmost sensitivity and compassion. After an initial assessment, patients are cared for based on the nature of the illness or injury. Those in life-threatening, critical-care situations are always given top priority, and helicopter transport is available to rapidly transport critically ill patients to other facilities when needed.

In order to provide care and protect patient privacy, visitors are allowed only at the discretion of the staff. Visits may not be permitted during some treatments or procedures.

Emergency Department Numbers

Main Line: 301-475-6111 / TTY: 301-475-6484

Primary Care, Urgent Care, Online Care & Emergency Services

Which is right for you? Check out care options at MedStar Health.

Tired of Waiting? Try Our Additional Services:

If you are not experiencing an emergency needing immediate care, community-based urgent care services are available. MedStar Health Urgent Care  offers fast, convenient care for treatment of minor injuries and illnesses, such as cold and flu symptoms, infections, allergies, earaches and rising temperatures, treatments for sprains, strains, or broken bones, minor burns and cuts, sports physicals, migraines, flu shots, concussion evaluations, and onsite imaging and laboratory services.

Call-ahead available! Walk-ins accepted. 

Call 301-290-1499 Today

Monday - Friday: 9 a.m. to 9 p.m.
Weekends: 10 a.m. to 8 p.m.


MedStar eVisit is available 24/7 and provides anytime access to urgent care for patients of all ages where it’s most convenient for you—at home, in the office or on the go. Connect using your smartphone, computer or tablet to get a diagnosis and prescription, if needed. You don’t have to be a MedStar Health patient to use this service—enrollment is free and no appointment is ever needed.

Enroll For Free.  After registering, you can have a secure virtual consultation for a non-emergency medical issue within minutes through your computer or mobile device. Each visit costs $59 or less* and insurance is not required. Learn more.

*MedStar eVisit is covered by some insurance providers. Contact your insurance provider to determine whether your visit will be covered.