Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Abigail Bernadette Duffy, MS, RD, LDN
Registered Dietitian in Walpole, MA · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578423844
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Registry record
Entity type Individual (Type 1)
Name Abigail Bernadette Duffy
Credential MS, RD, LDN
Sex Female
Practice address 30 Edgewood Ave, Walpole, MA, 02081
Phone (508) 918-8676
Enumeration date Nov 17, 2025
Last updated in NPPES Nov 17, 2025
Taxonomy & licenses
133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License LDN8523 (MA) Primary
RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration.
About the RD credential
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.
Frequently asked questions
How do I verify Abigail Duffy's NPI record?
Cross-check NPI 1578423844 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1578423844 active?
Yes, as of the latest NPPES snapshot, NPI 1578423844 is active (record last updated 2025-11-17).
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-17.