Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Allyson Marie Larsen, LMSW

Social Worker in Iowa City, IA · enumerated 2011.

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

National Provider Identifier

1114202413

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Allyson Marie Larsen

Credential LMSW

Sex Female

Practice address 200 Hawkins Dr, C124 Gh, Iowa City, IA, 52242

Phone (319) 353-6860

Enumeration date Oct 18, 2011

Last updated in NPPES Oct 18, 2013

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 007878 (IA) Primary

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 Allyson Larsen?

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

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-10-18.