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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.

ABIGAIL STIFFLER MSW
NPI 1891682373
Social Worker in Shoreline, WA

Active since June 18, 2025
17018 15TH AVE NE, SHORELINE, WA 98155(206) 362-7282 Get Directions Write a Review

NPPES record last updated: September 3, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 3, 2026, Aug 11, 2026, Jun 18, 2025 (3 updates tracked since 2025).

About Abigail Stiffler Msw NPPES

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

ABIGAIL STIFFLER MSW (NPI 1891682373) is an individual social worker in Shoreline, Washington, licensed in Washington (SWIA.SC.70144555) and active in the NPI registry since June 2025.

NPPES Registry Identity

NPI1891682373
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameABIGAIL STIFFLERCredential: MSW
Location Address17018 15TH AVE NEShoreline, WA 98155-5137
Mailing Address17018 15th Ave NeShoreline, WA 98155-5137 · (206) 362-7282
Phone(206) 362-7282
Sole ProprietorNo
Enumeration DateJune 18, 2025
Last NPPES UpdateSeptember 3, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 3, 2026
✔ NPI 1891682373 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in WA · SWIA.SC.70144555
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
17018 15TH AVE NE, Shoreline, WA 98155
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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.

RAMSEY VIRGIL RAMSEY LMFT, IEDS
Marriage & Family Therapist
17018 15TH AVE NE
SHORELINE, WA 98155
King County (206) 601-5186
MYLINH BUI
Counselor
17018 15TH AVE NE
SHORELINE, WA 98155
King County (206) 288-9010
KARLEEN MICHAEL MARS TAMTE
Counselor (Mental Health)
17018 15TH AVE NE
SHORELINE, WA 98155
King County (206) 362-7282
EMILY ANN RIEHL
Counselor
17018 15TH AVE NE
SHORELINE, WA 98155
King County (206) 362-7282
RICHARD RUNGE
Case Manager/Care Coordinator
17018 15TH AVE NE
SHORELINE, WA 98155
King County (206) 369-1224
KATIE DORAINE HORTON
Student in an Organized Health Care Education/Training Program
17018 15TH AVE NE
SHORELINE, WA 98155
King County (206) 362-7282
ERICA EWELL
Counselor
17018 15TH AVE NE
SHORELINE, WA 98155
King County (206) 362-7282
CENTER FOR HUMAN SERVICES
Clinic/Center (Rehabilitation, Substance Use Disorder)
17018 15TH AVE NE
SHORELINE, WA 98155
King County (206) 362-7282

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 Abigail Stiffler's NPI number?

The NPI number for Abigail Stiffler is 1891682373. It was assigned to this individual provider in the NPPES registry on June 18, 2025.

Where is Abigail Stiffler located?

Abigail Stiffler practices at 17018 15th Ave NE, Shoreline, WA 98155. The listed phone number is (206) 362-7282.

What is Abigail Stiffler's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Abigail Stiffler was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.