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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARJORIE J. SLADEK ARNP
NPI 1619116498
Nurse Practitioner - Adult Health in Federal Way, WA

Active since February 18, 2009
34509 9TH AVE S, SUITE 200, FEDERAL WAY, WA 98003(253) 927-4777(253) 565-8777 Get Directions Write a Review

NPPES record last updated: July 5, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Marjorie J. Sladek Arnp NPPES

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

MARJORIE J. SLADEK ARNP (NPI 1619116498) is an individual adult health provider in Federal Way, Washington, licensed in Washington (AP60056902) and active in the NPI registry since February 2009.

NPPES Registry Identity

NPI1619116498
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameMARJORIE J. SLADEKCredential: ARNP
Location Address34509 9TH AVE S, SUITE 200Federal Way, WA 98003-6700
Mailing Address34509 9th Ave S, Suite 200Federal Way, WA 98003-6700 · (253) 927-4777 · Fax (253) 565-8777
Phone(253) 927-4777
Fax(253) 565-8777
Sole ProprietorNo
Enumeration DateFebruary 18, 2009
Last NPPES UpdateJuly 5, 2026
✔ NPI 1619116498 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2200X
License✔ Licensed in WA · AP60056902
34509 9TH AVE S, Federal Way, WA 98003
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Other Names 1

Former Name (1)Marjorie Correll

Other Identifiers 3

Other0259643WA · State L&i
Other0246151WA · State L&i
Other0259633WA · State L&i

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.

DEANNA EISELE RD
Dietitian, Registered
34509 9TH AVE S, STE 310
FEDERAL WAY, WA 98003
King County (253) 944-6544
FRANCISCAN MEDICAL GROUP
Internal Medicine (Cardiovascular Disease)
34509 9TH AVE S, STE 304
FEDERAL WAY, WA 98003
King County (253) 939-1230
PULMONARY CONSULTANTS, PLLC
Specialist
34509 9TH AVE S, SUITE 104
FEDERAL WAY, WA 98003
King County (253) 572-5140
DR. THEODORE KOICHI INOUYE M.D.
Surgery
34509 9TH AVE S, STE 208
FEDERAL WAY, WA 98003
King County (253) 944-3278
EMILY KUTA DPM
Student in an Organized Health Care Education/Training Program
34509 9TH AVE S
FEDERAL WAY, WA 98003
King County (215) 776-3546
MRS. KRISTEN R HOWARD ARNP
Nurse Practitioner (Family)
34509 9TH AVE S, SUITE 103
FEDERAL WAY, WA 98003
King County (253) 815-7774
DR. PETER VAUGHN KILBURN DO
Surgery
34509 9TH AVE S, SUITE 309
FEDERAL WAY, WA 98003
King County (253) 661-1814
PUGET SOUND ALLERGY ASTHMA AND IMMUNOLOGY
Allergy & Immunology (Clinical & Laboratory Immunology)
34509 9TH AVE S, SUITE 207
FEDERAL WAY, WA 98003
King County (253) 662-5667

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 Marjorie Sladek's NPI number?

The NPI number for Marjorie Sladek is 1619116498. It was assigned to this individual provider in the NPPES registry on February 18, 2009. The provider is also known as Marjorie Correll.

Where is Marjorie Sladek located?

Marjorie Sladek practices at 34509 9th Ave S Suite 200, Federal Way, WA 98003. The listed phone number is (253) 927-4777.

What is Marjorie Sladek's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

When was this NPI record last updated?

The NPPES record for Marjorie Sladek was last updated on July 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 50 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.