Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Mary Susan Mcmillen, RN BSN
Registered Nurse in Adrian, MI · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1396977609
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mrs. Mary Susan Mcmillen
Credential RN BSN
Sex Female
Practice address 2299 Laberdee Rd, Adrian, MI, 49221
Phone (517) 265-5160
Enumeration date Aug 20, 2009
Last updated in NPPES Aug 20, 2009
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
Where does Mary Mcmillen practice?
The practice location on file with NPPES is in Adrian, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Mcmillen?
The National Provider Identifier (NPI) for Mary Mcmillen is 1396977609, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-20.