Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Nathaniel Lewis
Behavior Analyst in Redmond, WA · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1154733665
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Registry record
Entity type Individual (Type 1)
Name Nathaniel Lewis
Sex Male
Practice address 15600 Redmond Way Ste 205, Suite 205, Redmond, WA, 98052
Phone (425) 242-0973
Enumeration date Jun 2, 2014
Last updated in NPPES Jun 2, 2014
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 Nathaniel Lewis?
Nathaniel Lewis is registered in NPPES with the primary taxonomy of Behavior Analyst. 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 2014-06-02.