NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Wladimir Dorelien

Behavior Analyst in Staten Island, NY · enumerated 2016 · practices at A Friendly Face LLC.

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

National Provider Identifier

1376905083

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Registry record

Entity type Individual (Type 1)
Name Mr. Wladimir Dorelien
Sex Male
Practice address Staten Island, NY, 10314
Phone (347) 782-8734
Enumeration date Mar 22, 2016
Last updated in NPPES Mar 22, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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

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 Wladimir Dorelien?
Wladimir Dorelien 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-22.