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Top Walk-In Clinics in Grantham, St. Catharines (2026)

4 clinics in Grantham — ranked by patient ratings

About Walk-In Clinics in Grantham

Grantham is a residential and commercial area within St. Catharines, Ontario, served by 4 walk-in clinics with an average patient rating of 3.6/5 across 4 reviewed clinics. Walk-in clinics in Grantham treat common urgent concerns such as colds and flu, minor infections, prescription refills, sprains, rashes, and routine follow-ups, with no appointment required for most visits. 1 of these clinics list weekend hours, and most accept new patients without referral. Compare the 4 options above by rating, hours, services, and proximity to find the best fit for your visit.

How to choose a walk-in clinic in Grantham

  • Hours: Use the "Open Now" filter to find clinics currently accepting patients.
  • Ratings: Listings are sorted by Google rating and review volume so the highest-rated options appear first.
  • Services: Each clinic page lists the specific services offered (e.g. lab work, imaging, vaccinations, mental health support).
  • Accessibility: Use the "Wheelchair Accessible" filter to see only locations with confirmed accessibility.
  • Location: The map shows each clinic's exact address so you can pick the closest option.

Frequently asked questions

How many walk-in clinics are in Grantham?

There are 4 walk-in clinics listed in Grantham, St. Catharines. Use the list above to compare them by rating, hours, services, and distance from your location.

Which walk-in clinic in Grantham has the highest rating?

Ratings vary among walk-in clinics in Grantham. Compare the current Google ratings and review counts in the list above to find a clinic that matches your needs.

Are walk-in clinics in Grantham open on weekends?

Yes. 1 of the 4 walk-in clinics in Grantham list Saturday or Sunday hours. Use the "Open Now" filter above to see which clinics are accepting patients right now.

Do I need an appointment to visit a walk-in clinic in Grantham?

No. Walk-in clinics in Grantham accept patients without an appointment, though wait times vary by time of day. Many clinics also offer online check-in or booking through their website if you prefer to reserve a slot.

Looking beyond Grantham? Browse all walk-in clinics in St. Catharines or see walk-in clinics across Ontario.