Keele Medical Ontario Referral Source

Dr. Steven John Gabriel Tresierra

Find Ontario specialists, clinics and hospital programs. Compare estimated wait times, contact details and referral requirements in Keele Medical’s public directory.

Dr. Steven John Gabriel Tresierra

Specialty: Anaesthesia

Location: 76 Stuart Street, Kingston Health Sciences Centre, Department of Anesthesiology/Perioperative Medicine, Victory 2, Kingston ON, K7L 2V7

Physicians: Dr. Steven John Gabriel Tresierra

Estimated wait time: Not published

Phone: 613-548-7827

Fax: 613-548-1375

Languages: English

Additional information: CPSO register lists 1 additional practice address(es) not captured in this harvest.

Last verified: 2026-09-24

Wait times are estimates from the latest directory update. Contact the clinic to confirm current availability and referral requirements.

Browse all Ontario referrals

html{scroll-padding-top:80px} .care-public-header,.care-public-header *{box-sizing:border-box} .care-public-header{position:sticky;top:0;z-index:40;border-bottom:1px solid #e2e8f0;background:rgba(255,255,255,.97);box-shadow:0 1px 2px rgba(15,23,42,.04);font:500 14px/1.4 system-ui,-apple-system,sans-serif;color:#334155} .care-public-header-inner{height:72px;max-width:1400px;margin:auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between;gap:20px} .care-public-brand{display:flex;align-items:center;gap:10px;flex:none;min-width:0;color:#17344a!important;text-decoration:none!important;white-space:nowrap}.care-public-brand img{max-height:40px;max-width:170px;object-fit:contain}.care-public-brand-mark{display:grid;place-items:center;flex:none;width:40px;height:40px;border-radius:12px;background:#ff6200;color:#fff}.care-public-brand-mark svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.care-public-brand-copy{display:flex;flex-direction:column;min-width:0;line-height:1}.care-public-brand-line{display:flex;align-items:baseline;gap:2px}.care-public-brand-suffix{font-size:13px;font-weight:700}.care-public-brand-copy small{display:block;margin-top:6px;overflow:hidden;text-overflow:ellipsis;font-size:10px;font-weight:650;letter-spacing:.12em;text-transform:uppercase;color:#64748b} .care-public-header a:focus-visible,.care-public-header summary:focus-visible{outline:2px solid #ff6200;outline-offset:3px} .care-public-links{display:none;align-items:center;gap:4px}.care-public-links a,.care-public-popover>a{color:#475569!important;text-decoration:none!important;border-radius:9px;font-weight:600}.care-public-links a{padding:10px 12px;white-space:nowrap}.care-public-links a:hover,.care-public-popover>a:hover{background:#f8fafc;color:#0f172a!important}.care-public-links a[aria-current],.care-public-popover>a[aria-current]{background:#fff4eb;color:#9a3412!important} .care-nav-dropdown{position:relative}.care-nav-dropdown>summary{display:flex;align-items:center;gap:4px;padding:10px 12px;border-radius:9px;color:#475569;font-weight:600;cursor:pointer;list-style:none;white-space:nowrap}.care-nav-dropdown>summary::-webkit-details-marker{display:none}.care-nav-dropdown>summary:hover{background:#f8fafc;color:#0f172a}.care-nav-caret{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .15s}.care-nav-dropdown[open]>summary .care-nav-caret{transform:rotate(180deg)}.care-nav-dropdown-panel{position:absolute;top:calc(100% + 6px);left:0;min-width:200px;padding:6px;border:1px solid #e2e8f0;border-radius:12px;background:#fff;box-shadow:0 18px 30px -18px rgba(15,23,42,.28);display:flex;flex-direction:column;gap:2px;z-index:1}.care-nav-dropdown-panel a{padding:10px 12px;border-radius:8px;color:#475569!important;text-decoration:none!important;font-weight:600;white-space:nowrap}.care-nav-dropdown-panel a:hover{background:#f8fafc;color:#0f172a!important}.care-public-popover .care-nav-dropdown-panel{position:static;border:0;box-shadow:none;padding-left:14px;margin-top:2px} .care-public-menu{margin-left:auto}.care-public-menu summary{height:44px;display:flex;align-items:center;gap:8px;padding:0 13px;border:1px solid #dbe3ed;border-radius:9px;background:#fff;box-shadow:0 1px 2px rgba(15,23,42,.05);color:#1e293b;font-weight:650;cursor:pointer;list-style:none}.care-public-menu summary::-webkit-details-marker{display:none}.care-public-menu summary svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}.care-menu-close,.care-public-menu[open] .care-menu-open{display:none}.care-public-menu[open] .care-menu-close{display:block} .care-public-popover{position:absolute;left:0;right:0;top:100%;max-height:calc(100dvh - 72px);overflow:auto;padding:8px 16px max(16px,env(safe-area-inset-bottom));border-bottom:1px solid #e2e8f0;background:#fff;box-shadow:0 18px 30px -18px rgba(15,23,42,.28)}.care-public-popover>a{display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:9px;font-size:15px}.care-public-popover .care-nav-dropdown>summary{min-height:48px;font-size:15px} @media(min-width:640px){.care-public-header-inner{padding:0 24px}.care-public-popover{padding-left:24px;padding-right:24px}} @media(min-width:1280px){.care-public-header-inner{height:80px}.care-public-links{display:flex}.care-public-menu{display:none}}

Keele MedicalClinic & Pharmacy · North York

Keele Walk-in Clinic & Pharmacy

Schedule your appointment in person at the clinic, or book a virtual visit on most days of the week. For in-person visits, please call before coming in.

What we treat

Care for your whole family, in one place

Walk in, book ahead, or be seen virtually on most days of the week. Every request below reaches our team directly.

ADHD Assessment & Treatment

Assessment, diagnosis and ongoing management for adults and youth.

Request an appointment →

Weight Loss

A medically supervised plan built around your health history, not a one-size-fits-all program.

Request an appointment →

Insomnia & Sleep Problems

Get to the cause of poor sleep and treat it, rather than managing it indefinitely.

Request an appointment →

Methadone & Suboxone Treatment

Road to Recovery addiction care in Toronto: opioid agonist therapy including Methadone, Suboxone® and Kadian® programs.

Visit a doctor today →

Erectile Dysfunction (ED) Treatment

Clinically proven treatments, as needed or daily, prescribed after a proper assessment.

Visit a doctor today →

Opening hours

When you can come in

These are pharmacy hours. Clinic hours vary — please call before coming in person.

Phone(647) 243-4620
Fax(647) 689-6521
Address3472 Keele St. North York, ON, M3J 3M1

Monday10:00 AM – 2:00 PM

Tuesday10:00 AM – 2:00 PM

WednesdayClosed

ThursdayClosed

Friday10:00 AM – 2:00 PM

Saturday10:00 AM – 2:00 PM

Sunday10:00 AM – 2:00 PM

Clinic hours differ from the pharmacy hours shown here. Please call (647) 243-4620 before coming in for an in-person visit.

From our patients

What people say about us

Keele Medical Clinic has been a lifesaver for me. Their professional staff and comprehensive services make every visit pleasant. I appreciate their dedication to patient care and the convenience of having medical and pharmacy services in one place.

Jordan Lee

I am so grateful for Keele Medical Clinic. Their attentive care and efficient service have truly enhanced my healthcare experience. The convenience of accessing both clinic and pharmacy under one roof is unparalleled.

Alex Morgan

Keele Medical Clinic/Pharmacy consistently provides exceptional healthcare services. The staff are always professional and caring. Having the clinic and pharmacy together saves time and adds convenience to managing my health needs.

Taylor Smith

Find us

3472 Keele St., North York

Clinic and pharmacy share one entrance, so a prescription written at your visit can be filled before you leave.

Phone(647) 243-4620
Fax(647) 689-6521
ParkingOn-site, at the front of the building.

3472 Keele St.
North York, ON M3J 3M1

Open the address in your map app for directions and live traffic.

Google Maps Apple Maps OpenStreetMap

Browse conditions · Browse medications · Meet our providers · Contact us

Home · Conditions · Locations · Cities We Serve · Medications · Providers · Health resources

Keele Medical · General health information. A personal assessment is needed for treatment decisions.