Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cecily Ann Byrne, MS, RD, LDN

Q: What is the NPI number for Cecily Byrne?

The National Provider Identifier (NPI) for Cecily Byrne is 1841315579, a Type 1 (individual) record in the CMS NPPES registry.

Registered Dietitian in Chicago, IL · enumerated 2007.

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

National Provider Identifier

1841315579

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Registry record

Entity type Individual (Type 1)

Name Cecily Ann Byrne

Credential MS, RD, LDN

Sex Female

Practice address 2929 S Ellis Ave, Baumgarten Basement, Chicago, IL, 60616

Phone (312) 791-2497

Enumeration date Mar 20, 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Cecily Byrne practice?

The practice location on file with NPPES is in Chicago, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Cecily Byrne?

The National Provider Identifier (NPI) for Cecily Byrne is 1841315579, a Type 1 (individual) record in the CMS NPPES registry.

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