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

Jennifer Derfel, MS, RDN, CDN

Registered Dietitian in Pound Ridge, NY · enumerated 2023 · practices at Jennifer Derfel Nutrition Pllc.

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

National Provider Identifier

1447949144

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Registry record

Entity type Individual (Type 1)
Name Jennifer Derfel
Credential MS, RDN, CDN
Sex Female
Practice address Pound Ridge, NY, 10576
Phone (914) 275-2736
Enumeration date May 8, 2023
Last updated in NPPES Nov 28, 2023

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

Taxonomy & licenses

133VN1101X Gerontological Nutrition Registered Dietitian Dietary & Nutritional Service Providers · License 011515 (NY) Secondary
133VN1201X Obesity and Weight Management Nutrition Registered Dietitian Dietary & Nutritional Service Providers Secondary
133VN1301X Oncology Nutrition Registered Dietitian Dietary & Nutritional Service Providers · License 011515 (NY) Secondary
133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 011515 (NY) 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

What is the NPI number for Jennifer Derfel?
The National Provider Identifier (NPI) for Jennifer Derfel is 1447949144, a Type 1 (individual) record in the CMS NPPES registry.
Where does Jennifer Derfel practice?
The practice location on file with NPPES is in Pound Ridge, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-28.