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

Melanie Kathleen O'Reilly, DT

Developmental Therapist in Bartlett, IL · enumerated 2008.

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

National Provider Identifier

1275789836

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Registry record

Entity type Individual (Type 1)

Name Melanie Kathleen O'Reilly

Credential DT

Sex Female

Practice address Bartlett, IL, 60103

Phone (630) 837-2384

Enumeration date Aug 14, 2008

Last updated in NPPES Aug 14, 2008

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

Taxonomy & licenses

222Q00000X Developmental Therapist Respiratory, Developmental, Rehabilitative and Restorative 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Melanie O'Reilly?

Melanie O'Reilly is registered in NPPES with the primary taxonomy of Developmental Therapist. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-14.