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

Ms. Barbara J Wientzen-Dagenais, RD,CDE,BC-ADM

Registered Dietitian in Concord, NH · enumerated 2007.

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

National Provider Identifier

1104045616

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Registry record

Entity type Individual (Type 1)

Name Ms. Barbara J Wientzen-Dagenais

Credential RD,CDE,BC-ADM

Sex Female

Practice address Concord, NH, 03301

Phone (603) 227-7000

Fax (603) 227-7516

Enumeration date Apr 24, 2007

Last updated in NPPES Jul 15, 2020

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

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 87 (NH) Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

Other identifiers

Identifier	Type	State	Issuer
WIMT0252	Other	NH	MEDICAL NUTRITION THERAPY

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

How do I verify Barbara Wientzen-Dagenais's NPI record?

Cross-check NPI 1104045616 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1104045616 active?

Yes, as of the latest NPPES snapshot, NPI 1104045616 is active (record last updated 2020-07-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-15.