The medical insurance carriers, some medical insurance carriers has declared themselves insolvent due to a high claims experience. Some carriers has exited certain states, and some carries only provide limited health plans in certain states.
The plan to replace or modify the Obama Care health insurance system is to eliminate the barriers of purchasing medical insurance in a single state. Meaning a consumer would be free to purchase medical insurance across state lines. The pre-existing condition requirement is planning to continue under any proposed health plan.
Obtaining medical care, I recommend speaking with your doctor directly. Doctors and medical facilities have the power and authority to contract with medical insurance carriers. Always communicate with your doctor when considering changing health plans in any state.