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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JILL DIANA THORNELL RDN, LDN
NPI 1831930460
Dietitian, Registered in Waltham, MA

Active since June 06, 2024
33 CHERYL LN, WALTHAM, MA 02451(781) 996-8214 Get Directions Write a Review

NPPES record last updated: November 5, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Nov 5, 2026, Jun 6, 2024 (2 updates tracked since 2024).

About Jill Diana Thornell Rdn, Ldn NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JILL DIANA THORNELL RDN, LDN (NPI 1831930460) is an individual dietitian, registered in Waltham, Massachusetts, licensed in Massachusetts (86153166) and active in the NPI registry since June 2024.

NPPES Registry Identity

NPI1831930460
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameJILL DIANA THORNELLCredential: RDN, LDN
Location Address33 CHERYL LNWaltham, MA 02451-2131
Mailing Address33 Cheryl LnWaltham, MA 02451-2131 · (781) 996-8214
Phone(781) 996-8214
Sole ProprietorNo
Enumeration DateJune 6, 2024
Last NPPES UpdateNovember 5, 20262 updates tracked since enumeration
NPPES CertifiedNovember 5, 2026
✔ NPI 1831930460 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
License✔ Licensed in MA · 86153166
Definition
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
33 CHERYL LN, Waltham, MA 02451
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Other Names 1

Former Name (1)Jill Diana Weisberg

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of NC, Medica.Insurance ›

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jill Thornell's NPI number?

The NPI number for Jill Thornell is 1831930460. It was assigned to this individual provider in the NPPES registry on June 6, 2024. The provider is also known as Jill Diana Weisberg.

Where is Jill Thornell located?

Jill Thornell practices at 33 Cheryl Ln, Waltham, MA 02451. The listed phone number is (781) 996-8214.

What is Jill Thornell's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

What insurance does Jill Thornell accept?

Health plans from Blue Cross and Blue Shield of NC and Medica list Jill Thornell as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Jill Thornell was last updated on November 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.