(a) Each health care provider must obtain, by application if necessary, a national provider identifier.
(b) Each health care provider must accept and transmit national provider identifiers wherever required on all transactions it accepts or transmits electronically.
(c) Each health care provider must communicate any changes to the data elements in its file in the national provider system to an enumerator of national provider identifiers within 60 days of the change.
(d) Each health care provider may receive and use only one national provider identifier. Upon dissolution of a health care provider that is a corporation or a partnership, or upon the death of a health care provider who is an individual, the national provider identifier is inactivated.