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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Elizabeth R. Duke, R.D., L.D.N.

Registered Dietitian in Freeport, IL · enumerated 2007.

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

National Provider Identifier

1811049547

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Registry record

Entity type Individual (Type 1)
Name Mrs. Elizabeth R. Duke
Credential R.D., L.D.N.
Sex Female
Practice address 1045 W Stephenson St, Freeport, IL, 61032
Phone (815) 599-6549
Fax (815) 599-6103
Enumeration date Jan 16, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers 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.

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Frequently asked questions

Is NPI 1811049547 active?
Yes, as of the latest NPPES snapshot, NPI 1811049547 is active (record last updated 2007-07-08).
How do I verify Elizabeth Duke's NPI record?
Cross-check NPI 1811049547 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.