It might not directly. I can't get too much into it without getting anecdotal / sifting through databases but even the best medical systems in the world discriminate, it's kind just something people do. Even if they addressed race, you could go to a hundred trainings to not discriminate against aboriginal people, unless the program had a wide scope you might see someone obviously poor walk into the ER in pain and be more inclined to mark them down as drug-seeking.

That doesn't even get into what r/candlesandfish brought up, you could consider not building enough capable hospitals in areas where aboriginals tend to live a form of discrimination.

Discrimination by race is craftier than a sign painted "No Aboriginals", very often it is subconscious, and even if there is a special health system designed to bridge the gap (happy they're trying at least) without infrastructure and funding to back it up it's a band-aid solution.