Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Matthew Larson, LCSW

Clinical Social Worker in Nampa, ID · enumerated 2013 · practices at Ideal Mental Health, LLC.

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

National Provider Identifier

1982941027

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Registry record

Entity type Individual (Type 1)

Name Mr. Matthew Larson

Credential LCSW

Sex Male

Practice address 16 12th Ave S, Suite 201, Nampa, ID, 83651

Phone (208) 489-6866

Fax (208) 475-6025

Enumeration date Jan 9, 2013

Last updated in NPPES Dec 10, 2015

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW--33509 (ID) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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

Where does Matthew Larson practice?

The practice location on file with NPPES is in Nampa, ID. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Matthew Larson?

The National Provider Identifier (NPI) for Matthew Larson is 1982941027, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Ideal Mental Health, LLC Mental Health Clinic/Center (Including Community Mental Health Center) · Nampa, ID NPI 1770646820

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-10.