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Emergency Department

The Emergency Departments at Markham Stouffville Hospital provide rapid treatment for community members who experience sudden illness or trauma. Our Emergency Departments are open 24 hours a day, seven days a week, and are staffed by a team of experts specializing in emergency medicine. Each of our Emergency Departments have access to state-of-the-art diagnostic assessment equipment and laboratory services.

Below is a short video about emergency wait times, triage, and discharge you might find helpful.

Care We Provide

This service, which may be your first point of contact with Markham Stouffville Hospital, exists to provide initial treatment of serious illnesses and injuries, some of which may be life threatening and requiring immediate attention. After initial assessment and treatment, patients may be admitted to the hospital, transferred to a specialty hospital or discharged.

In order to ensure timely, quality care for the most serious conditions, we triage our incoming patients to determine the nature and severity of their condition. 

At the Markham site we direct patients with minor or less urgent symptoms to our Green Zone.

For easy access to discharge instructions, patients at the Markham site can download the Dash MD application to their smartphone. Dash MD provides patients treatment-specific aftercare instructions, helps manage medications and follow up appointments, helps patients find community care resources, and provides an opportunity to submit feedback on their experience at the hospital.

Care Providers

During your visit you will be seen by a physician.

Location and Contact Information

The Emergency Departments are located on the main level at each site, with their own dedicated Emergency entrance. Parking is available adjacent to Emergency, or you may park in any of our regular visitor parking areas. There is a patient drop-off area in front of each of the Emergency Department entrances.

Markham Site
Phone:  905-472-7111
Fax:  905-472-7026

Uxbridge Site
Phone: 905-852-9771 Ext. 5300
Fax: 905-852-2462

Hours of Operation:

Green Zone
7 days/week, 11:00 a.m. - 12:00 a.m.

Emergency and Yellow zone
24/7, 365 days a year

Frequently Asked Questions

What should I bring with me? It is especially helpful if patients arriving at the Emergency Department to list or bring samples of all medication they are taking. In addition, you should make us aware of any known allergies. Many pharmacies will now prepare individualized information charts for you.
Where should I go if I have post-surgical problems? If patients are visiting emergency for post-surgical problems, it is best to return to the hospital that conducted the surgery. They will have quick access to your important medical information.
What is the Green Zone? Our Green Zone facilitates more timely attention for less complex conditions in a separate area, freeing the Emergency Department to address the critical care needs of more complex cases. You may receive the appropriate care or treatment from any member of our team including a doctor or in some cases another specialist may be consulted. If the triage nurse assesses your symptoms or injuries to be of a less complex nature you will be referred to our Green Zone, in order to minimize your length of stay in our department. Some examples include lacerations, sprains, minor head injury.
What is the Yellow Zone? After you are assessed by the triage nurse, you may receive care in the Yellow Zone, a treatment area for ambulatory patients with minor to moderate situations. In this area stretchers are only used for assessments and certain treatments; you may be asked to return to the Yellow Zone waiting room to wait for further assessments, tests and results. Depending on the treatment provided patients may be allocated a recliner chair for those who may require a longer length of stay. Some examples include abdominal pain, mild breathing difficulties.
What is the orange zone? Patients with more complex conditions or those who may require a longer length of stay and require a stretcher will be placed in this area. You will be assessed by a nurse and physician and may require blood tests, x-rays or medications. Some examples include patients with severe dehydration, patients with a complex medical history and breathing problems.
What is blue/red zone? More complex patients who may require resuscitation, ongoing medical care or closer observation will be assigned to this area. You will be seen by a nurse and physician and may also see other members of our team such as a respiratory therapist, depending on your condition.

Patients who require monitoring of the heart through a cardiac monitor or more frequent vital sign monitoring are typically placed here. Some examples include heart attacks, severe breathing problems, traumas, cardiac arrests, active seizures.

 When will I be seen? All patients are seen by a triage nurse and assigned a triage level based on the Canadian Triage Acuity Scale. There are five triage levels ranging from #1 being the most critical to #5 being non-urgent. Patients are seen in the order of their triage level and not based on time of arrival. If your your condition changes while you are waiting to see a doctor let the nurse know immediately. This Triage approach allows us to give priority to those patients whose ailments are most severe and acute.