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MRS. ALEXANDRA LAUREN NIENHUIS ARNP
NPI 1194156117
Nurse Practitioner - Pediatrics in Seattle, WA

Active since December 01, 2013PECOS Enrolled
4800 SAND POINT WAY NE, SEATTLE, WA 98105(206) 987-2000 Get Directions Write a Review

NPPES record last updated: December 1, 2013. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mrs. Alexandra Lauren Nienhuis Arnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. ALEXANDRA LAUREN NIENHUIS ARNP (NPI 1194156117) is an individual pediatrics provider in Seattle, Washington, licensed in Washington (AP 60423173) and active in the NPI registry since December 2013. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194156117
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameMRS. ALEXANDRA LAUREN NIENHUISCredential: ARNP
Location Address4800 SAND POINT WAY NESeattle, WA 98105-3901
Mailing AddressPo Box 5371Seattle, WA 98145-5005 · (206) 987-5770 · Fax (206) 987-5779
Phone(206) 987-2000
Sole ProprietorNo
Enumeration DateDecember 1, 2013
✔ NPI 1194156117 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in WA · AP 60423173
4800 SAND POINT WAY NE, Seattle, WA 98105
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Other Names 1

Former Name (1)Alexandra Lauren Kinzer

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Alexandra Lauren Nienhuis Arnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.43 typical visit price
range $63.67 – $189.37
Typical copayment $24.35 (range $15.91 – $47.34)
Most-billed visit code 99203
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NALINI MALARKKAN MD
Anesthesiology
4800 SAND POINT WAY NE
SEATTLE, WA 98105
King County (206) 987-2728
MS. LINDA E EBLEN MA
Speech-Language Pathologist
4800 SAND POINT WAY NE, MAIL STOP W-6839
SEATTLE, WA 98105
King County (206) 987-6164
DR. JAMES TOLIVER BENNETT JR. M.D., PH.D.
Medical Genetics (Clinical Molecular Genetics)
4800 SAND POINT WAY NE, GENETIC MEDICINE
SEATTLE, WA 98105
King County (206) 987-2056
DR. LESLIE ANN DERVAN MD
Pediatrics (Pediatric Critical Care Medicine)
4800 SAND POINT WAY NE, MB.10.620
SEATTLE, WA 98105
King County (206) 987-0293
DR. INDI TREHAN MD
Pediatrics (Pediatric Infectious Diseases)
4800 SAND POINT WAY NE
SEATTLE, WA 98105
King County (206) 987-2000
MS. JENNIFER PATANO CNP
Nurse Practitioner (Pediatrics)
4800 SAND POINT WAY NE, MS O.7.720
SEATTLE, WA 98105
King County (206) 987-8949
MRS. SUSAN L HOLTZCLAW ARNP
Nurse Practitioner (Family)
4800 SAND POINT WAY NE, MAILSTOP T-2108
SEATTLE, WA 98105
King County (206) 987-5691
SHENG ZHOU MD
Otolaryngology (Pediatric Otolaryngology)
4800 SAND POINT WAY NE
SEATTLE, WA 98105
King County (206) 987-2105

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alexandra Nienhuis's NPI number?

The NPI number for Alexandra Nienhuis is 1194156117. It was assigned to this individual provider in the NPPES registry on December 1, 2013. The provider is also known as Alexandra Lauren Kinzer.

Where is Alexandra Nienhuis located?

Alexandra Nienhuis practices at 4800 Sand Point Way NE, Seattle, WA 98105. The listed phone number is (206) 987-2000.

What is Alexandra Nienhuis's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Is Alexandra Nienhuis enrolled in Medicare?

Yes. Alexandra Nienhuis is registered in the Medicare PECOS enrollment system.

What insurance does Alexandra Nienhuis accept?

Health plans from PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Alexandra Nienhuis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Alexandra Nienhuis was last updated on December 1, 2013. NPI Profile syncs with the weekly NPPES data releases published by CMS.