Hello. I am on LTD with a critical illness and I am
moving to be near a major hospital within the same province. My group insurance is attached to my employer. Is it ok to move?

Typically there are travel restrictions in LTD policies, which limit your freedom to leave the province and/or the country. I've never seen a term that prevents a move within the province, but you should get a copy of your policy and review those terms beforehand.