Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mrs. Alexandra Lauren Nienhuis, ARNP

Individual provider Pediatric Nurse Practitioner · NPI 1194156117

Mrs. Alexandra Lauren Nienhuis, ARNP is a Nurse Practitioner in Seattle, Washington. Qualified in 2013, 13 years ago. Practices with Seattle Childrens Hospital, a 111-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
13
Licensed in
WA
In the registry since
2013
What do these letters mean?
ARNP — Advanced Registered Nurse Practitioner
The title some states use for an advanced practice nurse.

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Practice location Address checks out

4800 Sand Point Way NE
Seattle, WA 98105-3901
Phone: (206) 987-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Nurse Practitioner (primary) Taxonomy 363LP0200X · Licence AP 60423173 (WA)

Record details

NPI number1194156117
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorNo
NPI enumeratedDecember 1, 2013
Last updated in NPPESDecember 1, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Seattle Childrens Hospital — 111 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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