Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Danielle R L O'Brien, MSW
Social Worker in Reno, NV · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1942515119
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Registry record
Entity type Individual (Type 1)
Name Mrs. Danielle R L O'Brien
Credential MSW
Sex Female
Practice address 2725 Yori Ave, Reno, NV, 89502
Phone (775) 329-0312
Fax (775) 329-0946
Enumeration date Aug 12, 2010
Last updated in NPPES Aug 12, 2010
Taxonomy & licenses
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
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 Danielle O'Brien?
Danielle O'Brien 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.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-12.