Applicants and recipients shall be entitled to free choice of those qualified practitioners, hospitals, nursing homes, and other dispensers of medical services meeting the requirements and complying with the rules and regulations of the Illinois Department. However, the Director of Healthcare and Family Services may, after providing reasonable notice and opportunity for hearing, deny, suspend or terminate any otherwise qualified person, firm, corporation, association, agency, institution, or other legal entity, from participation as a vendor of goods or services under the medical assistance program authorized by this Article if the Director finds such vendor of medical services in violation of this Act or the policy or rules and regulations issued pursuant to this Act.