Mercer Island Therapy, PLLC
NPI 1003129461 · Clinical Social Worker · Mercer Island, WA
Mercer Island Therapy, PLLC is a Clinical Social Worker organization in Mercer Island, WA (NPI 1003129461).
Provider details
- NPI number
- 1003129461
- Entity type
- Organization
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Ron Feinberg, Partner(206) 226-8879
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Clinical Psychologist103TC0700X
Behavioral Health & Social Service Providers
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Northwest Speech Therapy / Spotlight Social Skills
Registry dates
- Enumerated
- 2010-07-14
- Last updated
- 2022-01-03
- Certified
- 2022-01-03
Frequently asked questions
- What is Mercer Island Therapy, PLLC's NPI number?
- Mercer Island Therapy, PLLC's National Provider Identifier (NPI) is 1003129461, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mercer Island Therapy, PLLC?
- Mercer Island Therapy, PLLC is classified in the NPPES registry as Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mercer Island Therapy, PLLC located?
- Mercer Island Therapy, PLLC's practice location on file with NPPES is 8015 Se 28th St Ste 309, Mercer Island, WA 98040-2910.
- What is Mercer Island Therapy, PLLC's phone number?
- The practice phone number listed in the NPPES registry for Mercer Island Therapy, PLLC is (206) 236-1294.
- Who is the authorized official for Mercer Island Therapy, PLLC?
- The authorized official listed on Mercer Island Therapy, PLLC's NPPES record is Ron Feinberg, Partner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mercer Island Therapy, PLLC's NPI active?
- Yes — Mercer Island Therapy, PLLC's NPI (1003129461) is active in the NPPES registry as of the last update on 2022-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.