Dr. Annisa Chang and Dr. Christopher Tan operate a family medicine and walk-in clinic at 7130 Warden Avenue in Markham, Ontario. Their office is located in Unit 206-207 of a medical building in the L3R postal area, making it a convenient option for residents across Markham and the surrounding York Region communities.

The clinic serves both walk-in patients and those seeking ongoing primary care. Whether you are dealing with a sudden illness, a minor injury, or a health concern that needs prompt attention, the practice is set up to accommodate patients who may not have a regular family doctor or who simply need to be seen quickly. Walk-in visits are a core part of what the clinic offers, so patients do not always need a prior appointment to receive care.

For patients looking for more continuous care, family medicine services allow for a longer-term relationship with a physician. This can include routine checkups, preventive health screenings, chronic disease management, and referrals to specialists when needed. Having a consistent family doctor helps with coordinating care over time and keeping track of your medical history.

Dr. Chang and Dr. Tan bring a physician-led approach to the clinic, meaning patients are seen directly by a licensed family physician rather than being redirected. This matters for patients who want a clear diagnosis, a treatment plan, and the ability to ask follow-up questions in a straightforward clinical setting.

Patients visiting the clinic should bring their Ontario Health Insurance Plan card. If you are coming as a walk-in, it is worth calling ahead or arriving early to understand current wait times, as availability can vary by day. The Warden Avenue location has accessible parking nearby, which makes it practical for patients of different mobility needs.

The clinic is well-positioned for those living or working in the Buttonville and Milliken Mills areas of Markham, as well as nearby parts of Scarborough. It functions as a reliable point of access for general medical care without the delays that sometimes come with emergency or urgent care facilities. For routine and same-day health needs, this practice offers a grounded, physician-led option in a well-connected part of the city.