NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison Rivers

Clinical Social Worker in Grass Valley, CA · enumerated 2025 · practices at Nevada Jt. Union High School District.

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

National Provider Identifier

1659241008

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Allison Rivers
Sex Female
Practice address 11645 Ridge Rd, Grass Valley, CA, 95945
Enumeration date Nov 10, 2025
Last updated in NPPES Nov 10, 2025

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 125611 (CA) 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

What specialty is Allison Rivers?
Allison Rivers 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.
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

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-10.