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RON K FEINBERG MSW, LICSW
NPI 1861516825
Social Worker - Clinical in Mercer Island, WA

Active since March 16, 2007Opted out of Medicare · through Apr 1, 2028
8015 SE 28TH ST, SUITE 201, MERCER ISLAND, WA 98040(206) 236-1294(630) 604-9955 Get Directions Write a Review

NPPES record last updated: January 3, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 3, 2022, Dec 12, 2016 (2 updates tracked since 2016).

About Ron K Feinberg Msw, Licsw NPPES

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

RON K FEINBERG MSW, LICSW (NPI 1861516825) is an individual clinical provider in Mercer Island, Washington, licensed in Washington (LW00004561) and active in the NPI registry since March 2007. He has opted out of Medicare through April 1, 2028.

NPPES Registry Identity

NPI1861516825
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameRON K FEINBERGCredential: MSW, LICSW
Location Address8015 SE 28TH ST, SUITE 201Mercer Island, WA 98040-2910
Mailing Address8015 Se 28th St, Ste 309Mercer Island, WA 98040-2910 · (206) 236-1294 · Fax (630) 604-9955
Phone(206) 236-1294
Fax(630) 604-9955
Sole ProprietorNo
Enumeration DateMarch 16, 2007
Last NPPES UpdateJanuary 3, 20222 updates tracked since enumeration
NPPES CertifiedJanuary 3, 2022
✔ NPI 1861516825 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 · LW00004561
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.
8015 SE 28TH ST, Mercer Island, WA 98040
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Ron K Feinberg Msw, Licsw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from April 1, 2026 through April 1, 2028.

Opt-Out Effective DateApril 1, 2026
Opt-Out In Effect ThroughApril 1, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 10

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

REGINA K FEINBERG MA, CCC
Speech-Language Pathologist
8015 SE 28TH ST, SUITE 309
MERCER ISLAND, WA 98040
King County (206) 226-8813
ROLAND BARACH PH.D.
Psychologist (Clinical)
8015 SE 28TH ST, #201
MERCER ISLAND, WA 98040
King County (206) 439-1762
PHYLLIS FIEDLER PHD
Psychologist (Clinical)
8015 SE 28TH ST, #201
MERCER ISLAND, WA 98040
King County (206) 439-1762
JANET MEAD LEAMON LMFT
Marriage & Family Therapist
8015 SE 28TH ST, SUITE 309
MERCER ISLAND, WA 98040
King County (206) 397-3002
ROLAND I BARACH PHD PS
Psychologist (Clinical)
8015 SE 28TH ST, #201
MERCER ISLAND, WA 98040
King County (206) 439-1762
DR. ROBERT C GOODE MD
Family Medicine
8015 SE 28TH ST, SUITE 310
MERCER ISLAND, WA 98040
King County (206) 898-2416
DR. MAUREEN L SWIFT D.D.S. M.S.D.
Dentist (Endodontics)
8015 SE 28TH ST
MERCER ISLAND, WA 98040
King County (206) 466-2635
LIAT TAMAR FEINBERG LICSW
Social Worker (Clinical)
8015 SE 28TH ST, SUITE 309
MERCER ISLAND, WA 98040
King County (206) 778-7074

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 Ron Feinberg's NPI number?

The NPI number for Ron Feinberg is 1861516825. It was assigned to this individual provider in the NPPES registry on March 16, 2007.

Where is Ron Feinberg located?

Ron Feinberg practices at 8015 SE 28th St Suite 201, Mercer Island, WA 98040. The listed phone number is (206) 236-1294.

What is Ron Feinberg's specialty?

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

Is Ron Feinberg enrolled in Medicare?

No. Ron Feinberg has opted out of Medicare through April 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

What insurance does Ron Feinberg accept?

Health plans from PacificSource Health Plans list Ron Feinberg 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 Ron Feinberg was last updated on January 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.