ɐ nˈæʃənəl pɹəvˈaɪdɚɹ aɪdˈɛntɪfˌaɪɚ ˌɛnpˌiːˈaɪ ɪz ɐ juːnˈiːk tˈɛndˈɪdʒɪt aɪdˈɛntɪfɪkˈeɪʃən nˈʌmbɚɹ ˈɪʃuːd tə hˈɛlθ kˈɛɹ pɹəvˈaɪdɚz ɪnðə juːnˈaɪɾᵻd stˈeɪts baɪ ðə sˈɛntɚz fɔːɹ mˈɛdɪkˌɛɹ ænd mˈɛdɪkˌeɪd sˈɜːvɪsᵻz sˌiːˌɛmˈɛs.
A National Provider Identifier (NPI) is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).