Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nathan Plummer Eisenberg, M.A., BCBA

Behavior Analyst in Los Angeles, CA · enumerated 2013.

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

National Provider Identifier

1831530476

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Registry record

Entity type Individual (Type 1)

Name Nathan Plummer Eisenberg

Credential M.A., BCBA

Sex Male

Practice address 4221 Wilshire Blvd Ste 300a, Los Angeles, CA, 90010

Phone (888) 428-3223

Fax (323) 866-1881

Enumeration date Jul 11, 2013

Last updated in NPPES Apr 20, 2021

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-13-13644 (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.

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Frequently asked questions

What specialty is Nathan Eisenberg?

Nathan Eisenberg 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-20.