It is not clear why you want to switch to a different health plan from your current Blue Cross plan. Is your current policy a Medicare Advantage PPO plan? Or, is it a supplemental Medicare policy that covers medical epenses and the Part A and Part B deductibles? Are you hoping to switch to a standard issue individual health plan? If so, this is unlikely since you are Medicare eligible due to a permanent disability. All companies that offer standard issue Individuals in California use medical underwriting in determining who they will approve for coverage. This means that they can decline who they want to for medical reasons. As far as we are aware, Crohn's disease is an uninsurable medical condition by all of the California insurance companies.