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

Guerdine Michoux Louis

Intellectual & Developmental Disabilities Psychologist in Harrington, DE · enumerated 2025.

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

National Provider Identifier

1669283602

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Registry record

Entity type Individual (Type 1)

Name Guerdine Michoux Louis

Sex Female

Practice address Harrington, DE, 19952

Phone (302) 393-4805

Enumeration date Jan 17, 2025

Last updated in NPPES Jan 19, 2025

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

Taxonomy & licenses

103TF0000X Family Psychologist Behavioral Health & Social Service Providers Secondary

103TH0004X Health Psychologist Behavioral Health & Social Service Providers Secondary

103TH0100X Health Service Psychologist Behavioral Health & Social Service Providers Secondary

103TM1800X Intellectual & Developmental Disabilities Psychologist 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Guerdine Louis?

Guerdine Louis is registered in NPPES with the primary taxonomy of Intellectual & Developmental Disabilities Psychologist. 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 2025-01-19.