No, there isn't. Healthcare is funded through taxes (part of the provincial budget, subsidized by federal transfer payments), not through premiums. Whether you decide to use it up to you, making it "optional" I guess, but there is no "opt out". Present your HC card, get services, leave.
Our system isn't perfect, and I advocate for better, voting that way. I vote NDP because they advocate for a national pharmacare program and universal dental care, eliminating the need for supplemental benefits, which, IMO, are bullshit BECAUSE they are subject to approval by the carrier and not everyone can afford it. Collectively, we can do better for less.
There are people here that are forced into bankruptcy to pay for drugs to save their lives, while multinational corporations use our collective resources as their license to print money and loopholes to avoid paying their share of taxes. That is unacceptable, and you should want better for your country, not use our shortcomings as an excuse to do less for yourselves.