Trillium Hospital: Find the Right Mississauga Site
People still search for “Trillium Hospital,” but the hospital at 100 Queensway West is officially called Mississauga Hospital and is part of Trillium Health Partners. The former Trillium Health Centre name is historical, so confirming the site name matters before you travel or call.
This page gives the current Mississauga Hospital address, main phone, appointment route, Emergency Department information, parking clues, patient records contacts and MyChart options.
Fast Answer: Trillium Hospital Address and Phone
Current official site name: Mississauga Hospital, Trillium Health Partners.
Address: 100 Queensway West, Mississauga, Ontario L5B 1B8, Canada.
Main phone: 905-848-7100. The hospital has a 24-hour Emergency Department. For a life-threatening emergency, call 911.
Address
100 Queensway West, Mississauga, ON L5B 1B8.
Main phone
905-848-7100 for general hospital routing.
Appointments
Use your clinic, referral, requisition or appointment instructions rather than expecting one central booking number.
Emergency
Mississauga Hospital has a 24-hour Emergency Department.
Why “Trillium Hospital” Can Be Confusing
Trillium Health Centre was an earlier organizational name. Trillium Health Centre and Credit Valley Hospital later joined, and the organization became Trillium Health Partners. The Queensway West hospital site returned to the name Mississauga Hospital.
If an older referral, family member or search result says “Trillium Hospital,” do not assume that automatically means every Trillium Health Partners location. Check the address on your appointment information before travelling.
Make Sure You Have the Correct Trillium Health Partners Site
Trillium Health Partners operates three main hospital sites. Your appointment letter, MyChart entry, referral or clinic instructions should identify the exact location.
| Site | Address | Main phone | What to check |
|---|---|---|---|
| Mississauga Hospital | 100 Queensway West, Mississauga, ON L5B 1B8 | 905-848-7100 | This is the Queensway West location commonly intended by older “Trillium Hospital” searches. |
| Credit Valley Hospital | 2200 Eglinton Avenue West, Mississauga, ON L5M 2N1 | 905-813-2200 | Do not go to Queensway West if your booking says Credit Valley Hospital. |
| Queensway Health Centre | 150 Sherway Drive, Toronto, ON M9C 1A5 | 416-259-6671 | This is a separate THP site in west Toronto. |
Match the hospital name and street address on your appointment information. “Trillium Health Partners” identifies the hospital system; it does not by itself tell you which building to attend.
Mississauga Hospital Address and Arrival Check
Some THP services operate from other buildings and satellite locations. If your instructions include a suite number, another street address or Credit Valley Hospital, follow those details rather than entering “Trillium Hospital” into navigation.
Trillium Hospital Phone Numbers: Which Number Should You Use?
The main switchboard is useful for routing, but several common patient tasks have more direct contacts.
| What you need | Phone | Best use |
|---|---|---|
| Main Mississauga Hospital line | 905-848-7100 | General routing when you do not have a department or clinic number. |
| Patient Inquiry | 905-848-7533 | Ask about a patient or request help reaching the appropriate inpatient area. |
| Patient Access line | 905-848-7123 | Reach a patient directly when you have the room extension. THP lists this line as available from 7 a.m. to 10 p.m. |
| Patient Relations | 905-848-7164 | Questions, concerns, compliments or unresolved patient-experience issues. |
| Health Records | 905-848-7181 | Release of Information and requests for copies of health records. |
| Patient Accounts | 416-521-4040 | Hospital bills and account questions. |
Call 911 for a life-threatening emergency.
How Appointments Work at Trillium Hospital
Mississauga Hospital does not use one universal public number to book every clinic, test and specialist appointment. The correct route depends on the service and whether a referral or requisition is required.
Identify the exact clinic or test
Look for the department name on your referral, requisition, appointment letter, MyChart entry, text message or email. Examples include diagnostic imaging, cardiology, surgery, fracture clinic or another specialty clinic.
Check whether you were referred
Many hospital specialty services are accessed through a physician or other health-care provider referral. Some tests require a requisition before the hospital can schedule them.
Use the clinic number you were given
If THP has already contacted you, use the number in that message or appointment paperwork before calling the main hospital switchboard.
Confirm the hospital site
Ask whether the appointment is at Mississauga Hospital, Credit Valley Hospital, Queensway Health Centre or a community location. This prevents one of the most common THP navigation mistakes.
Confirm arrival and preparation instructions
Ask for the entrance, floor, clinic name, registration point, arrival time and preparation requirements. Tests and procedures can have instructions that are specific to that service.
Use MyChart when your visit appears there
THP MyChart can show upcoming appointments and supports electronic check-in for applicable visits. It does not replace instructions from your clinic or care team.
Use the clinic or department contact attached to the appointment. The general Patient Relations office advises patients with clinic appointment questions to contact the relevant clinical area.
What to Confirm Before a Mississauga Hospital Appointment
Appointment details
- Correct hospital site and street address
- Clinic or department name
- Floor, unit or check-in location
- Appointment time and requested arrival time
- Referral or requisition status
- Preparation instructions
Common items to prepare
- Ontario health card or requested identification
- Appointment information
- Medication list
- Allergy information
- Any forms requested by the clinic
- Questions for the care team
Your specific clinic instructions take priority. Do not eat, drink, stop medication or change treatment before a test or procedure unless your health-care team has told you to do so.
Finding Your Department Inside Mississauga Hospital
Mississauga Hospital has services spread across multiple levels. The official hospital map should be checked when your appointment gives a unit or department name.
| Service or area | Official map clue | Practical action |
|---|---|---|
| Acute Internal Medicine Clinic | Listed on Level 1 | Check the appointment letter for the exact registration route. |
| Cardiac Catheterization Lab | Listed on Level 2 | Follow procedure-specific preparation and arrival instructions. |
| Cardiology / cardiovascular units | Several areas are listed on Level 2 | Do not rely only on the word “cardiology”; confirm the exact unit. |
| Day Surgery | Listed on Level 2 | Follow the surgery check-in instructions provided by THP. |
| Surgery Check-In | Listed on Level 2 | Patients scheduled for surgery should use the current surgery instructions rather than a general visitor route. |
| ICU and inpatient medicine areas | Located across higher hospital levels | Visitors should confirm the unit before travelling through the building. |
Mississauga Hospital Emergency Department
Life-threatening emergency?
Call 911. This independent hospital guide cannot assess symptoms or tell you whether Emergency care is medically necessary.
24-hour Emergency Department
Trillium Health Partners lists Mississauga Hospital as having a 24-hour Emergency Department at 100 Queensway West.
Follow Emergency signs
If you are going to Emergency, use hospital Emergency signage and current site directions rather than assuming the main visitor entrance is the correct drop-off point.
Parking and Getting to Mississauga Hospital
Mississauga Hospital is at Queensway West and Hurontario Street, a short distance north of the QEW. THP lists visitor parking in the multi-storey parking garage on Bronte College Court.
Parking garage
The visitor garage can be reached from hospital approaches including Bronte College Court, Queensway West and Confederation Parkway.
Accessible parking
THP lists accessible parking at the Mississauga Hospital site. Follow current signs because construction and site access can change.
EV charging
THP’s parking information lists EV charging stations at Mississauga Hospital.
Parking, construction activity, registration and finding the correct clinic can all add time. If your clinical service gives a requested arrival time, follow that instruction.
THP Shuttle Between Mississauga Hospital and Queensway Health Centre
Trillium Health Partners lists a weekday shuttle connecting Mississauga Hospital, Queensway Health Centre and the 2085 Hurontario Street location. Because shuttle schedules can change, confirm the current schedule before relying on it for an appointment.
Visiting a Patient at Trillium Hospital
Visitor access can depend on the patient’s unit, infection-control requirements and current hospital policies. Confirm the inpatient unit before arriving rather than relying on old visiting-hour information.
Accessibility at Mississauga Hospital
Trillium Health Partners provides accessibility information for patients and visitors. Wheelchairs are listed near the Information Desk at the Main and Family Care entrances, and accessible washrooms are available in the hospital.
Wheelchair support
Standard wheelchairs can be found by designated information areas. THP asks patients who require a bariatric wheelchair to make arrangements with their health-care provider.
Accessibility concerns
Patient Relations for Mississauga Hospital and Queensway Health Centre can be reached at 905-848-7164.
Important 2025 Service Change for Women and Children
As of October 8, 2025, Trillium Health Partners moved its inpatient hospital care for women’s health, birthing patients and children to Credit Valley Hospital at 2200 Eglinton Avenue West in Mississauga.
Some outpatient and specialized services remain at or near the Mississauga Hospital area, so patients should follow the exact location shown in their appointment information rather than assuming every women’s or children’s service moved.
Health Records and MyChart
Requesting hospital records
Trillium Health Partners Health Information Management handles Release of Information requests.
- Phone: 905-848-7181
- Fax: 905-848-7677
- Mississauga Hospital office: Room 1368
- Office hours: Monday to Friday, 8 a.m. to 4 p.m.
THP requires record requests to be submitted in writing with signed consent and identification. Health Records does not provide medical results verbally over the phone.
THP MyChart
MyChart is Trillium Health Partners’ secure patient portal. Depending on the information available in your account, it can show appointments, visit notes, results, medications, billing information and other health information.
MyChart also supports electronic check-in for applicable appointments and allows patients to request some records through the portal.
If the document or information you need is not available in MyChart, use THP’s formal Release of Information route.
Common Trillium Hospital Mistakes to Avoid
Using the old name as the location
“Trillium Hospital” does not identify the exact current THP site. Match the street address.
Calling the switchboard for every booking
Your clinic, referral paperwork or MyChart appointment may have a more direct number.
Going to the wrong THP hospital
Mississauga Hospital, Credit Valley Hospital and Queensway Health Centre are different sites.
Assuming all services remain at Queensway West
Clinical programs can move between THP sites. The 2025 women’s and children’s inpatient move is an important example.
Arriving without checking the department
A hospital address gets you to the property, but your department, floor and entrance get you to the appointment.
Using old parking or visitor details
Construction and hospital policies can change. Recheck time-sensitive information before travelling.
Official Trillium Health Partners Resources
Use the official THP website when you need the latest operational information, clinic instructions or hospital policies.
Independent Guide Notice
CanadaHospitals.org is an independent hospital information guide. It is not Trillium Health Partners or Mississauga Hospital and cannot book or cancel appointments, access patient records, confirm real-time hospital operations, provide medical advice or assess symptoms.
For urgent or life-threatening medical situations, call 911. For appointments, tests, records, visitor access and time-sensitive hospital information, follow Trillium Health Partners or your care team’s current instructions.
Trillium Hospital FAQs
What is Trillium Hospital called now?
People often use “Trillium Hospital” to refer to the hospital at 100 Queensway West in Mississauga. The current official site name is Mississauga Hospital, part of Trillium Health Partners. Trillium Health Centre was an earlier organizational name.
What is the address of Trillium Hospital in Mississauga?
Mississauga Hospital is located at 100 Queensway West, Mississauga, Ontario L5B 1B8, Canada.
What is the Trillium Hospital phone number?
The main Mississauga Hospital phone number is 905-848-7100. If you already have a clinic or department number, use that direct number for appointment-specific questions.
How do I book an appointment at Trillium Hospital?
There is no single booking route for every service. Many specialty clinics and tests require a referral or requisition. Use the instructions from your referring provider, clinic, appointment letter or MyChart. If you do not know the department, the main hospital line can help with routing.
Does Trillium Hospital have an Emergency Department?
Yes. Trillium Health Partners lists a 24-hour Emergency Department at Mississauga Hospital. Call 911 for a life-threatening emergency.
Is Credit Valley Hospital the same as Trillium Hospital?
No. Credit Valley Hospital and Mississauga Hospital are separate hospital sites within Trillium Health Partners. Credit Valley Hospital is at 2200 Eglinton Avenue West, while Mississauga Hospital is at 100 Queensway West.
Where did Trillium Hospital birthing and children’s inpatient services move?
Trillium Health Partners moved inpatient women’s health, birthing and children’s hospital care to Credit Valley Hospital effective October 8, 2025. Some outpatient services remain at or near the Mississauga Hospital site, so check your appointment location.
How do I request records from Trillium Health Partners?
Use Trillium Health Partners Health Information Management / Release of Information. The department phone number is 905-848-7181. THP requires a written, signed request with identification for formal record requests.
Can I see my Trillium appointments in MyChart?
THP MyChart can display upcoming appointments and other health information when available in your account. Some visits support electronic check-in. Always follow the clinic’s direct instructions if they differ from general portal information.
Is CanadaHospitals.org the official Trillium Health Partners website?
No. CanadaHospitals.org is an independent hospital navigation guide. Use official Trillium Health Partners resources for appointments, records, medical instructions and current operating information.
Information checked for the current guide: Trillium Health Partners hospital locations, contact information, directions, parking, hospital maps, accessibility, visitor information, Health Records, MyChart and current service-location notices. Hospital operations and clinic instructions can change, so verify time-sensitive details before travelling.