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Mrs. Alexandra Lauren Nienhuis, ARNP

Pediatric Nurse Practitioner in Seattle, WA · enumerated 2013.

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

National Provider Identifier

1194156117

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Registry record

Entity type Individual (Type 1)
Name Mrs. Alexandra Lauren Nienhuis
Credential ARNP
Sex Female
Practice address 4800 Sand Point Way Ne, Seattle, WA, 98105
Phone (206) 987-2000
Enumeration date Dec 1, 2013
Last updated in NPPES Dec 1, 2013

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP 60423173 (WA) 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

Where does Alexandra Nienhuis practice?
The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Alexandra Nienhuis?
The National Provider Identifier (NPI) for Alexandra Nienhuis is 1194156117, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-01.