Are provincial health care rules different in Ontario.
I'm an international student in BC and I have a provincial health care plan (BCMSP). That is in addition to the Health & Dental Care Plan I get through the University (specifically, through the Graduate Student Society). In BC, being enrolled in BCMSP was a requirement unless I can show a health care plan from my country that is considered equivalent to BCMSP.
Are you sure you don't have OHIP?
I thought a provincial health care plan is required for all Canadian (not necessarily citizens) residents.
EDIT:
I learn something new everyday.
Yes, it's true. International students are not eligible for OHIP (
http://www.health.gov.on.ca/english/public/program/ohip/ohip_mn.html). I'm so glad I chose BC!
To the OP, You'll have to call the insurance companies and ask them about pre-existing conditions.