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

Deborah Nelson, MS, CDN

Nutritionist in Darien, CT · enumerated 2018 · practices at Whole Harmony Nutrition, LLC.

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

National Provider Identifier

1811465891

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Registry record

Entity type Individual (Type 1)

Name Deborah Nelson

Credential MS, CDN

Sex Female

Practice address Darien, CT, 06820

Phone (203) 820-4800

Enumeration date Nov 7, 2018

Last updated in NPPES Nov 7, 2018

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

Taxonomy & licenses

133N00000X Nutritionist Dietary & Nutritional Service Providers · License 1708 (CT) 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

Where does Deborah Nelson practice?

The practice location on file with NPPES is in Darien, CT. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Deborah Nelson?

The National Provider Identifier (NPI) for Deborah Nelson is 1811465891, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Whole Harmony Nutrition, LLC Nutritionist · Darien, CT NPI 1396342390

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-07.