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Diehl Nutrition, LLC

Nutritionist in Norwalk, CT · enumerated 2022 · authorized official Catherine Diehl, Nutritionist.

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

National Provider Identifier

1386368058

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Registry record

Entity type Organization (Type 2)
Legal business name Diehl Nutrition, LLC
Practice address 488 Main Ave Ste 2, Norwalk, CT, 06851
Phone (203) 858-4615
Enumeration date Sep 27, 2022
Last updated in NPPES Sep 27, 2022

Taxonomy & classification

133N00000X Nutritionist Dietary & Nutritional Service Providers Primary

Authorized official

Name Catherine Diehl
Title Nutritionist
Phone (203) 858-4615

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 is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Diehl Nutrition, LLC?
Diehl Nutrition, LLC is registered in NPPES as a Nutritionist (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-27.