Walk-in clinic · Thornhill, ON · Hours not posted, call ahead
Hours: Mon to Fri 9 AM to 9 PM; Sat 9 AM to 5 PM; Sun 9 AM to 4 PM. Walk-ins via online queue. Phone (905) 738-6699.
WELL Health Medical Centres - Main Exchange is a multi-service clinic in Thornhill, formerly known as MCI - Main Exchange, offering both family practice and walk-in medical care along with pediatrics, allergy and immunology, and allied health services such as chiropractic, physiotherapy and massage therapy. Walk-in visits can be reserved online in advance, including for new patients, and the clinic is open Monday, Friday and Saturday with hours that vary by provider availability. Dr. Tara Safa is currently accepting new family practice patients, and online mental health therapy is also available.
In an emergency, call 911. Independent service, not affiliated with this clinic. Free nurse advice: 811.
Heads up: The clinic was formerly known as MCI - Main Exchange before being rebranded under the WELL Health network.
| Monday | 9 AM to 9 PM |
| Tuesday | 9 AM to 9 PM |
| Wednesday | 9 AM to 9 PM |
| Thursday | 9 AM to 9 PM |
| Friday | 9 AM to 9 PM |
| Saturday | 9 AM to 5 PM |
| Sunday | 9 AM to 4 PM |
Directory info from healthline_on, verified 2026-07-24. Details may have changed, call ahead to confirm.
Walk-ins via online queue. Clinic wording: “New Patient Reserve & Walk-In”
Accepting new patients.
Also offers virtual visits.
800 Steeles Ave W, Suite 4A, Thornhill, ON L4J 7L2
Call (905) 738-6699 Fax 905-738-6073 Get directions Website
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Physician-staffed walk-in clinic in Thornhill offering same-day, no-appointment urgent care seven days a week, with weekday hours in the morning through early evening and shorter weekend hours.
300 Steeles Ave W, Suite 10 · Thornhill
Hours not posted, call ahead
Emergency? Compare ER wait times in Thornhill, or call 911.
Directory info from healthline_on, verified 2026-07-24. Details may have changed, call ahead to confirm. Hours, walk-in policy and services were read from the clinic’s own website where one exists; if something here is out of date, the clinic’s site and phone line are the source of truth. Report an issue with this listing.