Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Irma Sommerfeld Licensed Clinical Social Worker A Professional Corp

Clinical Social Worker in Westlake Village, CA · enumerated 2021 · authorized official Irma Sommerfeld, Clinical Social Worker.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821663543

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Registry record

Entity type Organization (Type 2)

Legal business name Irma Sommerfeld Licensed Clinical Social Worker A Professional Corp

Practice address 650 Hampshire Rd Ste 200, Westlake Village, CA, 91361

Phone (805) 794-0743

Enumeration date May 25, 2021

Last updated in NPPES Sep 15, 2025

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary

Authorized official

Name Irma Sommerfeld

Title Clinical Social Worker

Phone (805) 794-0743

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Irma Sommerfeld Licensed Clinical Social Worker A Professional Corp?

NPPES lists Irma Sommerfeld (Clinical Social Worker) as the authorized official for this organization.

What is the NPI number for Irma Sommerfeld Licensed Clinical Social Worker A Professional Corp?

The NPI for Irma Sommerfeld Licensed Clinical Social Worker A Professional Corp is 1821663543, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

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Kelly Nicassio Marriage & Family Therapist · Westlake Village, CA NPI 1407120371 Irma Sommerfeld Mental Health Counselor · Westlake Village, CA NPI 1396190187 Brooke Saul Marriage & Family Therapist · Westlake Village, CA NPI 1679011878 Katie Wren Marriage & Family Therapist · Westlake Village, CA NPI 1659831899 Emilie Siraki Marriage & Family Therapist · Westlake Vlg, CA NPI 1164175709 Julie L. Ross, Licensed Marriage and Family Therapist, Inc. Marriage & Family Therapist · Westlake Village, CA NPI 1972252880 Karen Alexander Marriage & Family Therapist · Westlake Village, CA NPI 1922780311 Devin Cooper Marriage & Family Therapist · Westlake Village, CA NPI 1104605690

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-15.