Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Diane M Barnes, MS RD CSR
Registered Dietitian in Joliet, IL · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346361045
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Registry record
Entity type Individual (Type 1)
Name Mrs. Diane M Barnes
Credential MS RD CSR
Sex Female
Practice address 2121 Oneida St, Suite 104, Joliet, IL, 60435
Phone (815) 744-9300
Fax (815) 744-9347
Enumeration date Apr 2, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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
Where does Diane Barnes practice?
The practice location on file with NPPES is in Joliet, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diane Barnes?
The National Provider Identifier (NPI) for Diane Barnes is 1346361045, 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.