(a) All contracts shall contain a "notice contact" provision listing the name or title and address of the person to whom all correspondence, including proposed amendments and other notices, pertaining to the contractual relationship between parties shall be provided. Each party to a contract shall designate its notice contact under such contract.
(b) Means for sending all notices provided under a contract shall be one or more of the following, calculated as (i) five business days following the date the notice is placed, first-class postage prepaid, in the United States mail; (ii) on the day the notice is hand delivered; (iii) for certified or registered mail, the date on the return receipt; or (iv) for commercial courier service, the date of delivery. Nothing in this section prohibits the use of an electronic medium for a communication other than an amendment if agreed to by the insurer and the provider.