Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ariel Lien Horn, CSW
Social Worker in Cheyenne, WY · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1699309914
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Registry record
Entity type Individual (Type 1)
Name Ariel Lien Horn
Credential CSW
Sex Female
Practice address 4025 Rawlins St, Cheyenne, WY, 82001
Phone (307) 426-4798
Enumeration date Feb 25, 2020
Last updated in NPPES Feb 25, 2020
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License CSW-311 (WY) 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.
Frequently asked questions
What specialty is Ariel Horn?
Ariel Horn 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.
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.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-25.