Guarantor responsibility: Payment for all professional services rendered is the responsibility of the patient, parent, or guardian. Co-payments and all other payments for services are due when services are rendered. Dr. Litzinger is an in-network provider with most Blue Cross NC plans and most United Healthcare Plans. Please check with your insurance company prior to your visit to ensure coverage. If insurance issues arise, it is the responsibility of the Guarantor to contact the insurance company, group plan administrator, or employer representative for resolution. A patient's insurance policy is a contract between the patient and the insurance carrier.