1. Home
  2. Directory
  3. Washington
  4. Seattle
  5. Social Worker
  6. NPI Profile

SETH R SONENTHAL LICSW, SUDP
NPI 1124538103
Social Worker - Clinical in Seattle, WA

Active since October 04, 2017PECOS Enrolled
4742 42ND AVE SW UNIT 122, SEATTLE, WA 98116(206) 403-0173(206) 326-1223 Get Directions Write a Review

NPPES record last updated: April 14, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 14, 2026, Dec 22, 2025, Aug 4, 2024 and 2 more (5 updates tracked since 2018).

About Seth R Sonenthal Licsw, Sudp NPPES

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

SETH R SONENTHAL LICSW, SUDP (NPI 1124538103) is an individual clinical provider in Seattle, Washington, licensed in Washington (LW60951016) and active in the NPI registry since October 2017. He is enrolled in Medicare PECOS and maintains a secondary practice location in Seattle.

NPPES Registry Identity

NPI1124538103
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameSETH R SONENTHALCredential: LICSW, SUDP
Location Address4742 42ND AVE SW UNIT 122Seattle, WA 98116-4553
Mailing Address4742 42nd Ave Sw Unit 122Seattle, WA 98116-4553 · (206) 403-0173 · Fax (206) 326-1223
Phone(206) 403-0173
Fax(206) 326-1223
Sole ProprietorNo
Enumeration DateOctober 4, 2017
Last NPPES UpdateApril 14, 20265 updates tracked since enumeration
NPPES CertifiedApril 14, 2026
✔ NPI 1124538103 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in WA · LW60951016
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
4742 42ND AVE SW UNIT 122, Seattle, WA 98116
Open in Google Maps ↗

Secondary Practice Location 1

Location 14501 15th Ave S Ste 102Seattle, WA 98108-1874 · Phone (206) 403-0173 · Fax (206) 326-1223

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, BridgeSpan Health Company, MedMutual and more.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)

Seth R Sonenthal Licsw, Sudp 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 98116 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
$0.00 typical visit price
range $63.67 – $189.37
Typical copayment $0.00 (range $15.91 – $47.34)
Most-billed visit code NA
Established Patient
$78.74 typical visit price
range $21.12 – $155.00
Typical copayment $19.68 (range $5.28 – $38.75)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Seth Sonenthal's NPI number?

The NPI number for Seth Sonenthal is 1124538103. It was assigned to this individual provider in the NPPES registry on October 4, 2017.

Where is Seth Sonenthal located?

Seth Sonenthal practices at 4742 42nd Ave SW Unit 122, Seattle, WA 98116. The listed phone number is (206) 403-0173.

What is Seth Sonenthal's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Seth Sonenthal enrolled in Medicare?

Yes. Seth Sonenthal is registered in the Medicare PECOS enrollment system.

What insurance does Seth Sonenthal accept?

Health plans from Blue Cross and Blue Shield of Texas, BridgeSpan Health Company, MedMutual, Premera Blue Cross Blue Shield of Alaska and Regence BlueCross BlueShield of Oregon and 2 other insurers list Seth Sonenthal 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 Seth Sonenthal was last updated on April 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.