Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael A Larson, LICSW

Clinical Social Worker in Marshall, MN · enumerated 2018.

Data current as of Jul 11, 2026 · sourced from CMS NPPES

National Provider Identifier

1154829497

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Registry record

Entity type Individual (Type 1)

Name Michael A Larson

Credential LICSW

Sex Male

Practice address 1212 E College Dr, Marshall, MN, 56258

Phone (507) 532-3236

Fax (507) 532-0240

Enumeration date Jan 31, 2018

Last updated in NPPES Mar 19, 2018

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 20823 (MN) Primary

Other identifiers

Identifier	Type	State	Issuer
20823	Other	MN	LICSW LICENSE

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Michael Larson?

Michael Larson is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2018-03-19.