In Ontario you generally cannot book a specialist yourself — a family doctor or nurse practitioner has to refer you, and OHIP coverage for the specialist visit depends on that referral existing. Your doctor sends a referral letter with your history and test results; the specialist’s office reviews it, assigns a priority, and contacts you with an appointment. The wait depends almost entirely on urgency and on the specialty, from days for a suspected cancer to many months for a routine case. The most important thing you can do is follow up: referrals are the single most common place where things quietly fall through the cracks, usually because a fax failed or a phone number was out of date.
Step by step
Step 1 — The appointment where it starts
Your doctor decides a specialist is needed. To make the referral useful, they will usually complete the relevant tests first — bloodwork, imaging, an ECG — because most specialists want the workup done before they see you, and an incomplete referral gets returned or delayed.
This is why your doctor may say “let’s get these tests, then refer.” It is not a delay; it is what makes the referral move.
Step 2 — The referral is written and sent
Your doctor sends a referral letter containing why you are being referred, your relevant history, your medications and allergies, your test results, and how urgent they believe it is. It goes by secure fax, electronic referral system, or through a central intake service for certain specialties.
Ask two questions before you leave: Who are you referring me to? and Is there a central intake for this, or a specific doctor?
Step 3 — The specialist’s office triages it
The specialist reviews the letter and assigns a priority. This is the stage patients never see, and it is where the wait is really decided. A referral may also be:
- Accepted and queued by urgency
- Returned for more information or missing tests
- Declined if it is the wrong specialty or the office is closed to new referrals
- Redirected to a colleague with a shorter wait
Step 4 — You get contacted
The specialist’s office calls or writes with an appointment. For urgent cases this can be within days. For routine cases it may be weeks or months, and some offices will only contact you once an appointment is actually available.
Make sure your phone number and voicemail work. Offices often make one or two attempts and then move on, and a full voicemail box is a genuine cause of lost referrals.
Step 5 — The appointment
Bring your health card, your medication list, your test results if you have copies, and your questions written down. Specialist appointments are short and focused on one problem.
Step 6 — The report comes back to your doctor
The specialist writes to your family doctor with their findings and plan. Your doctor then integrates it into your overall care — adjusting medications, ordering follow-up, or arranging another referral.
Book a follow-up with your family doctor after a specialist visit. That is where the plan actually gets carried out.
How long will it take?
There is no single answer, but the pattern is consistent.
| Priority | Typical driver | Rough timeframe |
|---|---|---|
| Emergency | Needs care now | Same day, usually via the ER |
| Urgent | Suspected cancer, rapidly progressing symptoms, significant abnormal results | Days to a few weeks |
| Semi-urgent | Troubling but stable problems | Several weeks to a few months |
| Routine | Longstanding, stable, non-threatening | Months, sometimes longer |
What actually changes your wait:
- The specialty — some are far shorter-staffed than others
- Whether the required tests were completed before the referral
- Whether you are willing to travel outside Halton Region
- Whether there is a central intake pooling referrals
- Whether you can take a short-notice cancellation slot
Do you always need a referral?
| You generally need a referral | You generally do not |
|---|---|
| Any medical or surgical specialist for OHIP coverage | Optometrist |
| Most diagnostic imaging | Dentist |
| Physiatry, rheumatology, cardiology, dermatology, gastroenterology and the rest | Physiotherapy, chiropractic, massage (privately paid) |
| Most psychiatry | Walk-in clinics |
| Many allied programs and clinics | Pharmacist, for minor ailments they are authorised to assess |
| Some sexual health and public health clinics |
Even where a referral is not strictly required, going through your family doctor is usually the better route — it keeps your record complete and means someone is tracking the outcome.
How to make your referral move faster
- Do the tests your doctor orders, promptly. An incomplete referral sits still.
- Say yes to any specialist, anywhere. “I will travel to Hamilton, Oakville or Mississauga” can cut months off a wait.
- Ask to be put on a cancellation list when the office calls you.
- Keep your contact details current at both your clinic and the specialist’s office.
- Follow up at the three-week mark if you have heard nothing. Call your family doctor’s office and ask whether the referral was sent and acknowledged.
- Tell your family doctor if your symptoms get worse. A worsening picture can be re-referred as urgent — but only if they know.
- Do not cancel late or no-show. Some offices will not re-book, and you return to the back of the queue.
When a referral goes wrong
| Problem | What to do |
|---|---|
| Nothing heard after several weeks | Call your clinic, confirm the referral was sent and whether an acknowledgement came back |
| The referral was declined or returned | Ask your doctor to refer elsewhere, or to supply what was missing |
| The specialist is no longer taking patients | Ask about central intake or a different specialist in the region |
| You missed the office’s calls | Call them directly — you usually keep your place if you reach them quickly |
| Your symptoms have worsened while waiting | Book with your family doctor; this can change the priority |
| You want a second opinion | You are entitled to ask your family doctor for a referral to another specialist |
| The appointment is months away and you are frightened | Tell your family doctor that. They can reassess, re-prioritise, or manage symptoms in the meantime |
What a referral costs you
Nothing, if the specialist is an OHIP-billing physician and you have a valid health card and a referral.
What is not covered:
- Specialists practising entirely privately, outside OHIP
- Cosmetic procedures
- Some assessments requested by an employer, insurer or third party
- Forms, notes and reports, which may carry a fee
- Private clinics offering faster access for a fee
- Travel, parking and time off work — the real costs of a referral for most families
FAQ
Can I choose my specialist?
You can ask, and your doctor will usually try. But if the one you want has a two-year wait and a colleague has a two-month wait, your doctor will say so. With central intake you are generally assigned the next available appropriate specialist.
Can I refer myself?
Rarely, and usually at your own expense. Most OHIP-covered specialist care requires a referral from a physician or nurse practitioner.
Does the specialist get my whole file?
No. They get the referral letter with the relevant history, medications and results — not your entire record.
Who do I see for follow-up afterwards?
Both, for different purposes. The specialist for their specific problem; your family doctor to coordinate everything, manage medications and handle everything else.
What if the specialist and my family doctor disagree?
Talk to your family doctor about it. Disagreement is not unusual, and discussing it openly is better than quietly following one and ignoring the other.
How long is a referral valid?
It varies, and some offices consider a referral stale after a year. If a long time has passed, ask your doctor to re-send it.
Does going to the ER get me referred faster?
Only if the ER physician finds something genuinely urgent. Otherwise an ER-generated referral enters the same queue.
Can my referral be transferred if I change family doctors?
The referral itself stays with the specialist, but your new doctor may need to re-send it. Mention any pending referrals at your intake appointment.
Starting a referral with us
If you need a specialist and do not have a family doctor to refer you, that is the first problem to solve. Milton Health Centre accepts new family practice patients and handles referrals, requisitions and follow-up in-house — register at Milton Health Centre.
Related reading
- How to Find a Family Doctor in Milton, Ontario: A Complete Guide for New Patients
- Which Health Problems Belong With a Family Doctor, Not a Specialist?
- What a Family Doctor Can Handle That People Assume Needs a Hospital
- How to Transfer Your Medical Records to a New Clinic in Ontario
This article provides general health information for Ontario residents and is not medical advice. Wait times, referral processes and OHIP coverage vary and change. For advice about your own care, speak with your family doctor or call Health811 at 811.