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ELIZABETH MACK RN, ARNP-C
NPI 1881143758
Nurse Practitioner in Seattle, WA

Active since October 03, 2016PECOS Enrolled
3410 CLAREMONT AVE S, SEATTLE, WA 98144(206) 725-0747(206) 299-1814 Get Directions Write a Review

NPPES record last updated: December 18, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 18, 2025, Apr 3, 2025, Jun 29, 2018 (3 updates tracked since 2018).

About Elizabeth Mack Rn, Arnp-c NPPES

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

ELIZABETH MACK RN, ARNP-C (NPI 1881143758) is an individual nurse practitioner in Seattle, Washington, licensed in Washington (AP60691184) and active in the NPI registry since October 2016. She is enrolled in Medicare PECOS and maintains a secondary practice location in Seattle.

NPPES Registry Identity

NPI1881143758
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameELIZABETH MACKCredential: RN, ARNP-C
Location Address3410 CLAREMONT AVE SSeattle, WA 98144-6815
Mailing AddressPo Box 18612Seattle, WA 98118-0612 · (206) 725-0747 · Fax (206) 299-1814
Phone(206) 725-0747
Fax(206) 299-1814
Sole ProprietorNo
Enumeration DateOctober 3, 2016
Last NPPES UpdateDecember 18, 20253 updates tracked since enumeration
NPPES CertifiedDecember 18, 2025
✔ NPI 1881143758 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in WA · AP60691184
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedRegistered NurseTaxonomy 163W00000X · License RN60562783 (WA)
3410 CLAREMONT AVE S, Seattle, WA 98144
Open in Google Maps ↗

Secondary Practice Location 1

Location 1450 Alaskan Way S Ste 200Seattle, WA 98104-2785 · Phone (888) 731-8994

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Elizabeth Mack Rn, Arnp-c 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.

Medicare Billing Reassignment

Medicare enrollment records show Elizabeth Mack reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Seattle Children's Hospital
2.5 mi
Primary Care
3939 S OTHELLO ST STE 101
Seattle, WA 98118
  • Reassigned Medicare billing, Washington enrollment
  • Medicare enrollment name: Seattle Childrens Hospital
  • 912 clinicians in this Medicare group
NPI 1134251747 (206) 987-7200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98144 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 2

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

IMANI OWENS-BAILEY ND, EAMP, LAC
Naturopath
3410 CLAREMONT AVE S
SEATTLE, WA 98144
King County (206) 725-0747
TREJAUN CEMAL WHITE MA60689769
Massage Therapist
3410 CLAREMONT AVE S
SEATTLE, WA 98144
King County (206) 725-0747

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 Elizabeth Mack's NPI number?

The NPI number for Elizabeth Mack is 1881143758. It was assigned to this individual provider in the NPPES registry on October 3, 2016.

Where is Elizabeth Mack located?

Elizabeth Mack practices at 3410 Claremont Ave S, Seattle, WA 98144. The listed phone number is (206) 725-0747.

What is Elizabeth Mack's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Elizabeth Mack enrolled in Medicare?

Yes. Elizabeth Mack is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Elizabeth Mack's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Mack reassigns Medicare benefits to Seattle Children's Hospital (Seattle, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Elizabeth Mack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Elizabeth Mack accept?

Health plans from Ambetter Health, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Elizabeth Mack 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 Elizabeth Mack was last updated on December 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.