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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Katherine Macmillan

Licensed Practical Nurse in Yonkers, NY · enumerated 2011.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1811275894

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Registry record

Entity type Individual (Type 1)
Name Katherine Macmillan
Sex Female
Practice address Yonkers, NY, 10710
Phone (914) 400-4235
Enumeration date Jul 25, 2011
Last updated in NPPES Jul 25, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

164W00000X Licensed Practical Nurse Nursing Service Providers · License 294031-1 (NY) Primary

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.

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Frequently asked questions

What is the NPI number for Katherine Macmillan?
The National Provider Identifier (NPI) for Katherine Macmillan is 1811275894, a Type 1 (individual) record in the CMS NPPES registry.
Where does Katherine Macmillan practice?
The practice location on file with NPPES is in Yonkers, NY. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-25.