What is Steven Bass's NPI number?

Steven Bass's National Provider Identifier (NPI) is 1003383662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Steven Bass's specialty?

Steven Bass is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).

Where is Steven Bass located?

Steven Bass's practice location on file with NPPES is 1700 Airport Way S, Seattle, WA 98134-1618.

What is Steven Bass's phone number?

The practice phone number listed in the NPPES registry for Steven Bass is (206) 223-3644.

Is Steven Bass's NPI active?

Yes — Steven Bass's NPI (1003383662) is active in the NPPES registry as of the last update on 2025-08-25.

IndividualActive

Steven Bass, LSWAA

NPI 1003383662 · Social Worker · Seattle, WA

Steven Bass, LSWAA is a Social Worker provider in Seattle, WA (NPI 1003383662).

Provider details

NPI number: 1003383662
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Credential: LSWAA
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Social WorkerPrimary104100000XLicense CP60587615 (WA)
Behavioral Health & Social Service Providers
Counselor101Y00000X
Behavioral Health & Social Service Providers

Profile Score

Established profile(61/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
7 yrs in NPPES registry
Profile completeness38% of score
83% 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

1700 Airport Way S

Seattle, WA 98134-1618

Phone: (206) 223-3644

Street-level locationGet directions

More WA providers

Mailing address

6400 Southcenter Blvd

Tukwila, WA 98188-2547

Enumerated: 2018-10-31
Last updated: 2025-08-25
Certified: 2025-08-25

Frequently asked questions

What is Steven Bass's NPI number?: Steven Bass's National Provider Identifier (NPI) is 1003383662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Steven Bass's specialty?: Steven Bass is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
Where is Steven Bass located?: Steven Bass's practice location on file with NPPES is 1700 Airport Way S, Seattle, WA 98134-1618.
What is Steven Bass's phone number?: The practice phone number listed in the NPPES registry for Steven Bass is (206) 223-3644.
Is Steven Bass's NPI active?: Yes — Steven Bass's NPI (1003383662) is active in the NPPES registry as of the last update on 2025-08-25.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.