A self-insured health plan or an insurer that provides coverage under a disability insurance policy shall, at the request of an insured, provide to the insured a good faith estimate, as of the date of the request and assuming no medical complications or modifications in the insured’s treatment plan, of the insured’s total out-of-pocket cost according to the insured’s benefit terms for a specified health care service in the geographic region in which the health care service will be provided.