Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregory Ryan Swiller
Social Worker in North Hills, CA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689287419
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Registry record
Entity type Individual (Type 1)
Name Gregory Ryan Swiller
Sex Male
Practice address 16111 Plummer St Bldg 10, North Hills, CA, 91343
Phone (818) 891-7711
Enumeration date Aug 31, 2020
Last updated in NPPES Mar 14, 2024
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 Gregory Swiller?
Gregory Swiller 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
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-14.