King Clinic Family Doctors

The doctors and medical professionals at King Clinic have been providing services to the communities of King City, Nobleton, Oak Ridges, Newmarket, Maple, and Richmond hill for over 50 years.

King Clinic is conveniently located in the heart of King City Ontario, centrally within York Region. We are within walking distance to GO transit and nearby bus stops.

New patients can register on the waiting list of King City Medical Associates.
It is impossible to say exactly how long you will be on the waiting list. The time varies depending on the availability and the practice vacancies of our doctors.

You must update your registration if your contact information or your health situation changes. To do so, proceed in the same way as for a  new patient registration.

Your contact information must be up to date in order for the doctor assigned to you to contact you.
If you cannot be reached, your request may be suspended. 

Conditions for new patient registration:
  1. You do not have a family doctor
  2. You have a valid Health Card (OHIP card).

Effective immediately our email address has changed to our domain. So our emails to you will come from Obviously, this email is not watched and any email sent to it will bounce back. So this is more for outgoing emails.

If you have a non-medical question or concern you can email us at

If you have a medical question you have to phone the office or post it on the portal (Health Myself),

Also, we like to hear your feedback with respect to our service and learn from you how to improve it. You can email us at (coming soon an option of feedback from our website if you prefer anonymous feedback)

If you have a question about your referral we respect your time -  rather than waiting on the phone you can email us your question at ( and we will get back to you. The phone option is still available but we encourage the email option.

Our Specialists
Open Hours
SundayClosed except for emergencies
Saturday10:00am-2:00pm office will be open (except long weekends) for our patients (phone to book prior coming)
Patient Portal Login
For patients that have enrolled in our electronic communication system, you can login to our patient portal to book appointments and to communicate with our staff and doctors.
Click here to login to the patient portal
Important News
Dr. Ace leaving her practice at King Clinic. King Clinic Inc.
Jun 18, 2022

King City Medical Associates regret to inform our patients that Dr. Olga Ace is leaving her practice as of Sep 17th, 2022.  We are actively seeking a new doctor to join us and will update you. Dr. Ace will leave us to an academic family medicine post.

We apologize for any inconvenience this change will cause to Dr. Ace's patients' care and hopefully will be able to find a new doctor very soon.

We also like to wish Dr. Ace the best in her next career steps and she will be greatly missed by her patients, our staff and her colleagues.

King Clinic Inc.

June 18th, 2022.

(NACI) guidance on booster doses of COVID vaccines King Clinic Inc.
Oct 30, 2021

Dear patients,

Yesterday, the National Advisory Committee on Immunization (NACI) released further interim guidance on booster doses of COVID-19 vaccines to expand recommendations for other key populations that may be offered a booster dose of an mRNA COVID-19 vaccine including:

• Adults who are front-line health-care workers who have direct in-person contact with patients and who were vaccinated with a very short interval

• Adults 70 to 79 years of age

• People who received two doses of the AstraZeneca/COVISHIELD vaccine or one dose of the Janssen vaccine

• Adults in or from First Nations, Inuit and Métis communities

NACI now also strongly recommends that adults who are 80 and over be offered a booster dose, in addition to adults living in long-term care homes and other congregate settings that provide care for seniors.

All of the above are considered booster doses, while NACI considers the COVID-19 vaccine a three-dose series in moderately to severely immunocompromised populations.

Further direction on what this new guidance means for Ontario will be coming next week. We will share an update as soon as it is available.

Read the NACI statement on interim guidance for booster COVID-19 vaccine doses in Canada.