MARLENCIA JEAN WILLIAMS LICSW
NPI 1215687934
Social Worker - Clinical in Tukwila, WA

Q: What is Marlencia Williams's NPI number?

The NPI number for Marlencia Williams is 1215687934. It was assigned to this individual provider in the NPPES registry on March 25, 2022. The provider is also known as Marlencia Williams Licsw.

Q: What is Marlencia Williams's specialty?

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

Active since March 25, 2022PECOS Enrolled

15455 65TH AVE S, TUKWILA, WA 98188(206) 721-5170(360) 353-9440 Get Directions Write a Review

NPPES record last updated: June 18, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 18, 2025, Jul 25, 2024, Jul 20, 2023 (3 updates tracked since 2023).

On this page

About Marlencia Jean Williams Licsw NPPES

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

MARLENCIA JEAN WILLIAMS LICSW (NPI 1215687934) is an individual clinical provider in Tukwila, Washington, licensed in Washington (LW61599046) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS and maintains a secondary practice location in Renton.

NPPES Registry Identity

NPI1215687934

Entity TypeIndividualFemale

Primary Taxonomy1041C0700X

Provider Legal NameMARLENCIA JEAN WILLIAMSCredential: LICSW

Location Address15455 65TH AVE STukwila, WA 98188-2534

Mailing AddressPo Box 2429Longview, WA 98632-8486 · (360) 353-9494 · Fax (360) 353-9440

Phone(206) 721-5170

Fax(360) 353-9440

Sole ProprietorNo

Enumeration DateMarch 25, 2022

Last NPPES UpdateJune 18, 20253 updates tracked since enumeration

NPPES CertifiedJune 18, 2025

✔ NPI 1215687934 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code1041C0700X

License✔ Licensed in WA · LW61599046

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.

Also ListedCounselorTaxonomy 101Y00000X · License SC61213994 (WA)

Also ListedSocial WorkerTaxonomy 104100000X · License SC61213994 (WA)

15455 65TH AVE S, Tukwila, WA 98188

Open in Google Maps ↗

Other Names 1

Professional Name (2)Marlencia Williams Licsw

Secondary Practice Location 1

Location 1419 S 2nd St Ste 2Renton, WA 98057-2234 · Phone (206) 305-5581

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marlencia Jean Williams Licsw 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 Marlencia Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cowlitz Indian Tribe

97 mi

Clinic/Center

1044 11TH AVE
Longview, WA 98632

Reassigned Medicare billing, Texas enrollment
44 clinicians in this Medicare group

NPI 1740562909 (360) 575-8275

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 98188 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.

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.

MS. JENAYA LEE VAN HORN-DOBBERSTEIN LMFT

Marriage & Family Therapist