Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Margaret Diroff
Registered Nurse in Livonia, MI · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831577212
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Registry record
Entity type Individual (Type 1)
Name Margaret Diroff
Sex Female
Practice address 37551 Sunnydale St, Livonia, MI, 48154
Phone (810) 599-8702
Enumeration date May 18, 2015
Last updated in NPPES May 18, 2015
Taxonomy & licenses
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Margaret Diroff?
Margaret Diroff is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-18.