What is Stephen Kass's NPI number?

Stephen Kass's National Provider Identifier (NPI) is 1003551631, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Stephen Kass's specialty?

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

Where is Stephen Kass located?

Stephen Kass's practice location on file with NPPES is 35 W Main St Ste B, Ventura, CA 93001-4501.

What is Stephen Kass's phone number?

The practice phone number listed in the NPPES registry for Stephen Kass is (857) 300-9554.

Is Stephen Kass's NPI active?

Yes — Stephen Kass's NPI (1003551631) is active in the NPPES registry as of the last update on 2026-05-14.

IndividualActive

Stephen Kass, LCSW

NPI 1003551631 · Clinical Social Worker · Ventura, CA

Stephen Kass, LCSW is a Clinical Social Worker provider in Ventura, CA (NPI 1003551631).

Provider details

NPI number: 1003551631
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: LCSW
Sex: Male
Sole proprietor: No
License: 137466 (CA)

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700XLicense 137466 (CA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(60/100 index)

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

Registry tenure38% of score
4 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

35 W Main St Ste B

Ventura, CA 93001-4501

Phone: (857) 300-9554

Street-level locationGet directions

More CA providers

Mailing address